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Naruto: The Waifu Stealer

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Synopsis
Naruto is abruptly ripped from his world and summoned into a game: The NTR Game. Now, he must travel from world to world, making women submit to him as he steals them from their lovers. To his surprise, this challenge ends up being… really easy? (Maledom NTR Smut with plot) (Gamer Naruto)
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Chapter 1 - Rias Gremory

[Welcome to NTR: The Game, player Naruto Uzumaki!]

[Are you prepared to go on a multiversal quest to steal women from their lovers and gather the universe's biggest harem?]

Naruto stared blankly at the words in front of him, which had appeared out of thin air, and were just floating in the air. His eyes scanned over the words, rereading them a few times, and then, finally, he gave his answer.

"Nope," Naruto said bluntly, shaking his head at the floating words, "I died, so just let me see all my friends and family again! I don't wanna do whatever the hell this is!"

[Apologies, player, but participation is mandatory! The gods have chosen you for your heroic deeds in your life! Now, you have been called upon to protect the multiverse!]

"...Protect the multiverse by stealing women from their husbands?" Naruto deadpanned, glancing around the area to see if he could find a way out of this.

He didn't see anything immediately, as he was just standing in a large, vast expanse of blackness. The void area didn't have anywhere to go, and he was stuck with talking to the box in front of him.

[Think of it as a reward, Naruto Uzumaki!]

[Now, time to generate your first quest!]

[Generating…]

[Main Quest Alert!]

[Steal the Occult Research Club]

[Part 1:]

[Seduce [Rias Gremory], and steal her from [Issei Hyoudou]!

Rewards:

[+1000 Gold]

[+Starter Base]

Bonus Conditions:

Have sex with [Rias Gremory] in front of [Issei Hyoudou]

Turn [Issei Hyoudou] into a cuck!

Bonus Rewards:

[+9000 Gold]

[+Start with a [Medium–tier] starter base!]

Time Limit: 1 week

Failure: Start with no starter base!

Naruto just stared blankly at the wall of text again, "...I don't know what the hell any of this means! I know I died, alright, so just send me to the afterlife already!"

[Don't worry, Naruto Uzumaki, the tutorial is here to help you learn the ropes of the game!]

[You'll be sent to the first mission world now! Good luck!]

"First mission world? You can't just barely give me an explanation and then send me away–" Naruto was cut off as a flash of light filled his vision, and he had to squeeze his eyes shut.

Then, when he opened them again, he was no longer standing in the pitch–black void. Instead, he was standing on a typical road, with modern houses all around him, and there was a large open gate in front of him. Past the gate was a huge building, which was the size of multiple houses put together, and had the words 'Kuoh Academy' on the front.

[You have now entered the world of: DxD! Good luck, player!]

"What the hell do you mean good luck?! How did I even get here?!" Naruto huffed, glaring lightly at the words, which changed in reply to his words.

[You were teleported here by the Multiversal Harem System! This gaming system will help you along your journey!]

[Now, begin your quest, Naruto Uzumaki! Rias Gremory is within those walls, and you must seduce her!]

"I'm not seducing anybody," Naruto deadpanned again, "I don't even know who that is, and I'm… not the best with women."

As Naruto stared at the 'seduce' quest, he could only remember his constantly failed attempts at impressing Sakura. He definitely didn't have the qualifications for something like this.

[Don't worry, Naruto Uzumaki! This is a tutorial–ranked mission, so the difficulty has been decreased!]

[This world is one where women naturally love power, and Rias Gremory is a supernatural creature that needs powerful allies!]

[Become friendly with her, and then show her your power!]

[Then, seduce her before the week is over!]

[That's all the assistance you'll get for now! Good luck, Naruto UzumakI!]

The words disappeared after Naruto read the last line, and he groaned as he reached up and placed one of his hands on his face.

"What the hell is going on?" Naruto muttered, but he turned to look at Kuoh Academy again, "Well, might as well start gathering information."

Even if this mission was out of his comfort zone, Naruto was still an experienced ninja. If he viewed this as a mission, no matter how ridiculous it seemed, he was confident he could beat it.

Scene Break

"So, that's him, President?" Akeno Himejima asked, as the gorgeous black–haired woman was looking out a window, "He's not even trying to hide his power, is he? Do you think it's a trap?"

"I'm not sure," Rias Gremory answered, as the beautiful red–haired woman was standing to Akeno's side, "He's letting it run wild, but I'm not sure if it's on purpose or not. He appears to be a Youkai, and a very strong one at that."

"So, what are we going to do?" Akeno asked her Master curiously, and Rias' eyes just narrowed at the form of Nartuo Uzumaki as he walked through Kuoh Academy's courtyard, "He transferred out of nowhere yesterday. Even Sona didn't know about his arrival."

"If he didn't get either of our permissions to be in our territory, then he needs to be removed. That is, of course, if he's not useful," Rias licked her lips, her eyes trailing across the muscular frame the man had as she watched him from the Occult Research Clubroom's high window, "His power is no joke. If he can help me with the Riser situation, then…"

"I understand," Akeno nodded at her words, "Should I tell Koneko to start tracking him?"

"Yes," Rias simply nodded, and she turned away from the window. Soon, she would find out if this Youkai could be a useful member of her peerage or someone she needed to forcefully remove from her territory.

Scene Break

Koneko Toujou sat crouched behind a small wall, peeking around the corner as a blonde–haired man sat casually on the top of Kuoh Academy's roof. As she did, she realized that her simple mission to watch over Naruto Uzumaki would be a lot more difficult than she had initially assumed, and it was her own body's fault. Right now, she was doing her best to keep a deep heat from flushing across her face, as the man's scent alone was giving her an urge to rub her thighs together.

Koneko knew that being a Nekomata gave her a naturally stronger desire to mate than other races, but she had always kept that urge at bay. That had been difficult at times, as most powerful creatures had an aura around them that made women feel naturally attracted to them, and Koneko had met a lot of powerful people. Her urges became the strongest when around dragons or someone like her master's brother, Sirzechs Lucifer, who was one of the strongest men in the entire world. But even with those urges being stronger, they had never been difficult to handle. At worst, it was a small urge within her, which she managed to smush without much trouble.

But, right now, that urge was exploding within her. Her sensitive nose was twitching just from being near the man, and the pure aura of power he radiated was enough to make her feel dizzy. As she watched him with the intention of spying on him, and getting a better idea of why he had come to Kuoh Academy, she found that her job was very hard to do. Instead of watching him carefully, her eyes kept trailing down his figure, going over his thick, dense muscles. She felt naturally drawn to him, and she hated the way that she desperately wanted to run her hands over those large muscles.

After spending just one afternoon spying on Naruto, Koneko came to one conclusion: The man was dangerous. The most dangerous man she had ever met. Now, it was time to warn Rias.

Scene Break

"It's a pleasure to meet you, Uzumaki–san," Rias smiled brightly, giving the man in front of her the most beautiful smile she could muster.

This was something she was very good at, as her gorgeous face was usually enough to make most men a stuttering mess. When she added in her bright smile, then men tended to turn into mush in front of her.

"Yo," Naruto responded by merely holding up one hand in a simple wave, "Gremory–san. What'd you want to meet with me for?"

The blonde man's casual response, and the fact that he didn't even blush at her beauty, made Rias blink. Most men would be stuttering right now, and yet this man was acting like she was just a normal person. Still, Rias was a professional, and she didn't let her smile falter.

"I'm the President of the Occult Research Club," Rias said, as she gestured towards the clubroom around them, "And I was hoping to ask you to join. You see, I am always on the lookout for unique individuals, and you certainly seem to be one."

"An Occult Research Club?" Naruto repeated, tilting his head slightly, "What do you guys research? Ghosts and stuff?"

"Ghosts, devils, angels, all that kind of thing," Rias confirmed, her smile widening slightly as she watched him.

She was testing him, trying to see if he would react to the mention of devils and angels. After all, as a Youkai, he would know about the supernatural world.

Naruto just let out a small hum, "I see. Well, I don't know much about that stuff, so I don't think I'd be interested. Not really my thing, you know?"

"I insist," Rias said smoothly, smiling brightly again as she sat behind the desk in the Occult Research Club's clubroom, looking at Naruto as he casually sat on one of the couches in the room, "I think you'd make a great addition to our club."

"I don't," Naruto shrugged unhelpfully, and Rias' smile broke as Naruto didn't budge.

"Then, I'll be blunt, Uzumaki–san," She narrowed her eyes at him, "I know you're a Youkai, and you don't seem to be hiding it with the way you're flaunting your power. Why did you come to Kuoh?"

Naruto, for a split second, froze. He didn't know what a Youkai was, but the 'flaunting your power' part made him think that the system was right about Rias Gremory being a supernatural being. Still, he had to think of an excuse, and he had to think of one fast.

"I was bored," Naruto said lamely, and he winced internally at how weak that sounded. "Just traveling around, seeing the sights, and that type of stuff. This place seemed nice enough."

Rias stared at him for a long moment, obviously not fully buying his story, and then sighed, "You know that I'm a devil, correct?"

"Uh... yeah..." Naruto trailed off, having no idea what she meant, but just going with the flow of the conversation, "Totally... I knew that..."

"Then, you'll know that this is my territory," She leaned forward, her eyes locking with his, "And if you want to enter someone's territory, you need to ask for permission. Which, you clearly didn't do."

Well, it's not like I had a chance to! The game just randomly dropped me here!

"Yeah, I definitely knew that... my bad," Naruto just shrugged unhelpfully, and Rias sighed again. She crossed her arms, propping up her massive breasts as she did.

"It's alright, but if you want to stay here, then you need to negotiate a contract with me," She said, and her cheeks flushed a bit as her eyes trailed down his body, struggling to resist the way his natural aura of power made her feel.

"A contract?" Naruto raised an eyebrow at her, confused by what she meant. He had never heard of a contract in this way before. In Konoha, a contract was for things like the summoning jutsu, and he doubted she had a scroll for him to sign with some animals.

"Yes," She took a deep breath, trying to focus on the task at hand, "I have... a situation. A very problematic one. And I need a powerful ally. You're powerful, so I want to make you a temporary member of my peerage."

"A peerage?" Naruto asked, "You mean like... a group?"

"Something like that," Rias nodded, trying to understand what he meant, but getting the gist of what he was saying, "It's a group all high–class devils have. My servants, basically."

"I don't really like being called a servant," Naruto said, a slight frown forming on his face. He had spent years proving he wasn't just the demon fox's servant, and he was not about to become someone else's.

"You wouldn't be a servant, not really," Rias said, a slight hint of desperation in her voice. This was her only chance at getting out of her arranged marriage, and if this man could help her, then she would take it. "More like a... mercenary. A temporary one. I need you for a Rating Game, which is a competition between peerages."

"What kind of competition?" Naruto asked, leaning forward slightly. A competition was something he could understand and something he could get behind. A fight, perhaps? That was something he was good at.

"It's a battle between two peerages," Rias explained, "We fight in a special field, and the goal is to take out the King. The winner is the one who defeats the other King. And I need to win, or I'll be forced to marry a man I despise."

Naruto blinked, a single thought running through his mind as he thought back to the quest he had.

So, this is where I need to act, huh? I'm not good at this stuff, but damn it, I'll try!

"I see," Naruto said, a slow smile spreading across his face, "So you need a powerful fighter to help you win this 'Rating Game'."

"Yes," Rias nodded, a hopeful look in her eyes. He was starting to understand, and she was glad that she wouldn't have to explain the entire concept of the Devil society to him. "I need you."

"Alright," Naruto leaned back, a confident look on his face, "I'll do it. But I have my own conditions."

Rias' eyes narrowed, "What kind of conditions?"

"I'll help you win this Rating Game," Naruto said, his smirk widening as he watched her, "But in return, I want one night with you."

Rias froze, her eyes widening in shock as she processed his words. She had expected him to ask for money, or power, or even something else ridiculous. But this... this was something she hadn't expected.

"Excuse me?" She asked, her voice barely a whisper.

"You heard me," Naruto said, his smirk never leaving his face, "One night. Just you and me. In return, I'll help you win this 'Rating Game' thing."

I doubt she'll accept, but I'm just getting my foot in the door by doing this.

Rias stared at him, her mind racing. This was... a bold request. A very bold request. But, as she looked at him, she couldn't help but feel a strange sense of attraction to him. His confidence, the sheer power that radiated from him, and just by being around him, Rias felt her thighs naturally rub together.

"..." Rias was silent for a long moment, hesitating at first, but then finally gave a short nod. She wouldn't consider herself an easy woman, as she was still a virgin, but right now, she didn't have the luxury of protecting her virginity. She had already been planning on sacrificing her purity before she saw Naruto arrive, as she had intended to give it to her new peerage member, Issei, and ruin her value in Riser's eyes as a result.

Now, she justified to herself, she was just using that plan with a different man. This way, if Naruto really wasn't strong enough to defeat Riser, then she'd still be able to break the contract by revealing that she wasn't a virgin anymore. And, if he was strong enough to defeat Riser, then she'd pretend the night had never happened, and wouldn't have to ruin her reputation as the Heiress to her family. And, as Rias' eyes roamed over Naruto's muscular body again, blushing lightly, she couldn't help but admit that he was a much more appealing option than Issei was. If she had to lose her virginity, it might as well be to a man who looked like him.

"...Fine," Rias finally said, her voice a little shaky as she blushed, "I accept your condition. Help me win the Rating Game, and... and I'll give you one night."

"Great," Naruto's smirk widened into a grin, "It's a deal then, Rias–chan."

His sudden use of her given name made her blush deepen, and she quickly turned away to hide it. What was this man doing to her? She was a noble devil, the Crimson–Haired Ruin Princess! She wasn't supposed to be flustered by some random Youkai she had just met!

Damn, that actually worked?!

While Naruto was acting confident on the surface, his mind was reeling. He had expected for her to outright deny the suggestion, and all he'd have done was plant a seed. Then, through meeting and flirting with her many more times, he'd finally be able to fuck her. But... this was way too easy! The system wasn't kidding about this being a tutorial mission! Now, though, he had to actually follow through.

"Good," Rias said, her composure slowly returning as she turned back to face him, "Then... come back to the clubroom tonight."

"The clubroom, huh?" Naruto questioned, standing up from the couch and stretching his arms over his head, a movement that made Rias' eyes dart down to his exposed midriff for a second, his abs looking incredibly appealing, before she caught herself. "Alright. I'll be here."

Why the hell am I coming back here? I thought we just agreed to have sex? Is she just messing with me?

Despite his doubts, he turned and walked out of the room, leaving a slightly flustered Rias to watch him go. Her thighs brushed together nervously, and she slumped back in her chair as the heat faded from her face. The reality of what she had just agreed to set in, but instead of feeling ashamed, she felt aroused more than anything.

Scene Break.

"Rias?" Naruto called out as he knocked on the door to the Occult Research Club's clubhouse, feeling a bit awkward as he stood in the dead of the night.

Is she really going to be here?

Naruto's thoughts were confirmed as the door quickly opened, and a beet–red face Rias greeted him.

"Uzumaki–san," She said, her voice a bit shaky as she wouldn't meet his eyes, "Please... come in."

Naruto stepped into the clubroom, blinking as he saw that the usual lights were off, with only a few candles placed around the room, giving it a very intimate atmosphere. Rias walked to the middle of the room, and Naruto's breath hitched in his throat as he got a good look at her.

Gone was the usual school uniform, replaced with a flimsy, see–through nightgown that did little to hide her voluptuous body. The candlelight danced across the see–through clothes, tracing the curves of her figure with a flickering glow. His eyes were immediately drawn to her chest. Her breasts were immense, twin globes of pale perfection that strained against the delicate fabric, their sheer size putting even Tsunade to shame. They were heavy and full, with her large nipples already being hard and visible. He couldn't help but imagine the weight of them in his hands, as his cock twitched in his pants at the idea of touching them.

His gaze drifted downward, over the soft section of her stomach, her thin waist, and over his wide hips, until it came to rest on her ass. It was a masterpiece, a perfect, heart–shaped expanse of flesh that was even larger and rounder than Sakura's, defying gravity in its firmness. The sheer fabric of the nightgown clung to it, outlining every divine curve, promising a soft yet resilient yield to the touch. He felt an overwhelming urge to grip those massive cheeks, to feel them bounce and jiggle against him as he took her from behind.

She really was a goddess, as every inch of her skin looked soft and smooth, and every part of her body was thick and juicy. Naruto had never seen such a gorgeous woman in his entire life. His mind went blank for a moment, all coherent thought dissolving as he just stared at the woman for a minute.

"Uzumaki–san," Rias whispered, her hands fidgeting with the hem of her nightgown, "Are... are you just going to stand there?"

Naruto blinked, realizing he'd been gawking at her like an idiot. He scratched the back of his head, a faint blush dusting his own cheeks. "Ah, right. Sorry. Just... admiring the view."

"You certainly have a way with words." She chuckled lightly as a small, embarrassed smile touched her lips, then her hands moved up to the thin straps of her nightgown. "Well... a deal's a deal."

With a slow, deliberate motion that drew Naruto's eyes in, she slid the straps from her shoulders. The flimsy garment pooled at her feet in a whisper of silk, and Naruto's breath caught. If he thought she was a goddess in the nightgown, she had only confirmed that as she stood before him in all her naked glory. Her breasts were even more attractive without the fabric to obscure them, and her crotch was shaved and smooth.

She stood there, completely exposed, her body trembling slightly under the candlelight and his intense gaze.

Naruto, however, was still slightly confused. "Not to complain or anything, Rias–chan, but... why are we doing this here? I mean, your clubroom is nice and all, but it seems a bit... public."

He gestured vaguely at the large windows and the door, which, while locked, still didn't feel secure. "I kind of figured we'd go to a more... private place. Like your home, maybe?"

Rias scoffed, though the sound lacked her usual confidence. "I'm not going to bring some random Youkai I just met yesterday to my home," she said, her arms crossing over her chest, a futile attempt to cover her massive breasts. "This is my territory, my clubroom. It's... safe enough."

She looked away, her blush deepening. "Besides, it's not like anyone will be here at this hour."

Naruto shrugged, a smirk playing on his lips. "Fair enough."

Then, let's get on with it!

He then took a step forward and closed the distance between them in an instant. The air abruptly became filled with a new tension, and Rias found herself frozen in place as she looked up at the towering man in front of her. The confidence he exuded had her shaking, and the pure, raw power that rolled off him in waves made her head spin.

She had expected to be nervous, but she hadn't expected this. This... overwhelming feeling within her, that urged her to do whatever the man in front of her wanted her to do. A feeling of deep submission, which formed just from looking up at the man. She was a high–class devil, the Crimson–Haired Ruin Princess, and yet right now she felt like a small, helpless lamb in front of a big, bad wolf. A feeling that was surprisingly arousing, as Rias' thighs rubbed together lightly.

Naruto reached down, and Rias watched, mesmerized, as he gripped the hem of his orange and black jacket. With a single, smooth motion, he pulled it over his head, revealing the torso underneath. As he did, Rias' breath hitched.

His body was a masterpiece of masculine power, as it looked like he was well–trained, and practically made for fighting. His chest was broad and packed with solid muscle, each pectoral perfectly defined and straining against the skin. The lines of his abs were sharp and deep, drawing her eyes down each one, but then his hands went lower. Rias watched with wide eyes as he pulled down his pants, and his monster of a cock sprang upward.

Rias let out an audible gasp, and she had to stop herself from reaching out to touch it. It was huge, even bigger than she could have ever imagined, with veins running all along its long, thick shaft, and the tip was a round, angry red. The sight alone sent another jolt of lust through her, and she silently wondered if she'd even be able to take the massive rod. It was thick and girthy, and even without being fully hard, Naruto's cock was already approaching 10 inches. Rias gulped, a bead of sweat rolling down her forehead as her mind went blank for a moment.

Naruto's smirk widened as he saw the look of pure shock and awe on her face. He didn't have the most experience with women, but he knew that his cock was huge.

He stepped forward again, closing the last bit of distance between them, and then he reached out and gently cupped her cheek. The contact was electric, and a soft gasp escaped her lips as Rias' eyes stared up into Naruto's. His thumb brushed over her skin, and she leaned into his touch instinctively.

What was it that Jiraiya–sensei said? To flatter them?

"You're beautiful, Rias–chan," He whispered, his voice a low, husky rumble that vibrated through her, "More beautiful than any woman I've ever seen."

Rias' heart hammered in her chest at his words. She had been complimented countless times, but coming from him, it felt different. More genuine. More... potent. The way he said her name, the soft, intimate way, made her feel like she was the only woman in the world.

He leaned down, and Rias' eyes fluttered closed as her lips met his. The kiss started out soft, a gentle press of lips against lips. But it quickly deepened, morphing into something far more passionate and more demanding. Naruto's other hand came up to wrap around her waist, pulling her flush against his hard, muscular body. The feeling of his skin against hers sent Rias' mind reeling again, and a soft moan escaped her lips as his tongue probed at her mouth, seeking entry. She obliged, her own tongue meeting his in a slow, sensual dance.

Rias' mind was going blank, the original purpose of this night completely forgotten. She was no longer thinking about her arranged marriage, or about using Naruto to escape it. All she could think about was the man holding her, the taste of his lips, and the feeling of his hard cock pressing against her stomach. The sheer size of it, the heat radiating from it, was a constant, throbbing reminder of what was to come, and she found herself wanting it more than she had ever wanted anything in her life.

As they kissed, Naruto's hands roamed her body, exploring every curve and dip. One of them moved up from her waist, tracing the curve of her spine before coming to rest on the back of her neck, his fingers tangling in her crimson locks. The other, however, had a more direct destination. It slid down her back, over the swell of her ass, and then came around to her front, moving up to cup one of her massive breasts.

Rias gasped into the kiss as Naruto's large hand engulfed her tit, his fingers sinking into the soft flesh. He kneaded the heavy globe, his thumb brushing against her hardened nipple and sending whips of pleasure straight to her core. Her knees felt weak, and she leaned into him for support, her hands coming up to rest on his broad shoulders. He had completely taken control of the kiss, and she was helpless to do anything but moan and pant into his mouth as he groped and fondled her.

Naruto finally broke the kiss, pulling back slightly to look at her. Rias' face was a mess, her cheeks flushed a deep red, her lips swollen and parted as she panted for breath. Her blue–green eyes were hazy with lust, and they stared up at him with a look of complete and utter surrender.

"Like that, Rias–chan?" Naruto asked, a smug grin on his face as he continued to massage her breast. "You have amazing tits, you know that?"

Rias could only nod, a choked moan escaping her lips as he gave her nipple a particularly hard pinch, "I–I'm glad you like them, mgh!"

Her body was on fire, every nerve ending screaming for more. She had never felt anything like this before, as the overwhelming, all–consuming lust was making her dizzy. Naruto's power never lessened, filling the room, and as they were so close, covering her completely. She could feel it pressing down on her, silently ordering her to submit to his will.

Naruto leaned down, his lips finding their way to her neck. He trailed a line of hot, open–mouthed kisses down her throat, nipping and sucking at her sensitive skin. Rias' head lolled back, a loud moan tearing from her throat as he hit a particularly sensitive spot. His other hand came up to join the first, and soon both of her massive breasts were receiving his full attention. He squeezed and kneaded them, his fingers sinking into the soft flesh, his thumbs brushing against her aching nipples.

"Ah! Naruto–kun!" Rias moaned out, her hands moving from his shoulders to tangle in his spiky blonde hair, pulling him closer. The honorific slipped out before she could stop it, a clear sign of her crumbling defenses. She was no longer thinking about her deal, or about her arranged marriage. All that mattered was the pleasure this man was giving her, and the feeling of his hands on her body.

If there's one thing I learned from that pervy–sensei, it was this!

Naruto's hands moved from her breasts, and a soft whine of protest escaped Rias' lips at the loss of contact. But her whine quickly turned into a gasp as one of his hands slid down her stomach, his fingers tracing a path towards her core. He paused for a moment, his fingers hovering just above her slick folds, teasing her and making her ache for his touch.

"Please," she begged, her voice a breathy whisper, her hips bucking upwards, trying to force his fingers where she needed them most. "Please, Naruto–kun... touch me."

"Anything for you, Rias–chan," Naruto murmured against her skin, his lips still on her neck.

He finally gave her what she wanted, his fingers sliding through her wet folds. Rias cried out, her body jolting as if struck by lightning as his thumb found her clit and began to rub in slow circles. A wave of intense pleasure washed over her, and her knees buckled, her body going limp in his arms. If it weren't for his strong arm wrapped around her waist, she would have collapsed to the floor.

Naruto chuckled, his fingers starting to move a bit quicker. He found her entrance and slowly pushed a single finger inside her. Rias' walls clamped down around him immediately, a he was caught off guard by just how tight she was. He pumped his finger in and out of her, slowly at first, then faster as he added a second finger to the mix. He curled them upwards, searching for that special spot inside her that would drive her wild.

"Ah! Ah! Ah!" Rias moaned, her head thrown back in ecstasy as Naruto's fingers worked their magic. Her hips moved in time with his thrusts, grinding against his hand as she chased the pleasure he was giving her. The feeling was incredible, a thousand times better than anything she had ever felt on her own. She had touched herself before, and even 'experimented' with Akeno, but it was nothing compared to this. This was a whole different level of pleasure, and it was one she wasn't ready to handle.

That pleasure only became more wild as Naruto found the spot he was looking for, grinning as Rias' eyes nearly entirely glazed over in pleasure.

"NNNNGGH!" Rias let out a strangled cry, her body arching as a jolt of pure bliss shot through her. Her walls clamped down on Naruto's fingers like a vise, and her entire body trembled as a powerful orgasm washed over her. A gush of fluid erupted from her, drenching Naruto's hand and arm as she came, her mind going completely blank as she succumbed to the pleasure.

Naruto held her close as she rode out her orgasm, his fingers still working her clit and prolonging her pleasure. When she finally came down from her high, she was limp in his arms, panting heavily, her body slick with sweat. He pulled his fingers out of her, bringing them up to his lips and licking her juices clean. She tasted surprisingly sweet, like a mixture of honey and strawberries.

"That was just the warm–up, you know?" Naruto grinned down at Rias, who was panting, sweating lightly, and trembling in his arms, "Are you sure you can even handle me?"

"O–Of course... I can," Rias huffed out, trying to control her breathing as her pride was poked at. Even if she'd just been turned into a moaning, submissive mess, she was still Rias Gremory! The Crimson–Haired Princess of Ruin, as well as the Heiress to her noble family, was not going to be made a fool out of by some Youkai! "I can... take whatever you can give me..."

Naruto just chuckled at her defiant, albeit shaky, words. Without another word, he scooped her up into his arms, one arm under her knees and the other supporting her back. Rias let out a surprised yelp, her arms instinctively wrapping around his neck for support as he carried her effortlessly towards one of the large, plush couches in the center of the room.

He gently laid her down on the soft furniture, her crimson hair sprawling out as he did. For a moment, he just stood there, looking down at her. His cock was fully erect now, standing at a proud, intimidating near 15 inches. It seemed to pulse with a life of its own, the veins along its thick shaft throbbing in the dim candlelight. The sight of it made Rias' mouth go dry, and she had to swallow hard, a strange mix of arousal and anticipation churning in her stomach. The sheer size of it was both terrifying and exhilarating.

Naruto just smirked, moving to sit down next to her, but Rias quickly raised her hand to stop him.

"After what you just did, I need to get you ready as well," She smirked, trying to force her fast–beating heart to slow down as she sat up and leaned forward. Her hand reached forward, grabbed his throbbing rod, and started to slowly stroke it up and down. His massive dick was hot and heavy in her small hand, and she could feel the raw power contained within it.

That wasn't the only power in the room, as even while Rias tried to keep her composure, the sight was almost too much for her. She stared up, Naruto towering over her as his massive cock jutted towards her face, and his power pressed down on her. It urged her to submit, to kneel, and to do whatever he said. As she was still coming down from the pleasure he had given her earlier, it was a hard urge to resist, but she tried her best.

Even with both her hands, they could barely fit around its circumference. She started to move, her strokes slow and deliberate, her eyes locked on his as she tried to regain some semblance of control.

But Naruto remained completely unfazed, the smug smirk never leaving his face as he watched her. He had expected her to be impressed, but this was something else. She was staring at his cock like it was some kind of holy relic, her blue–green eyes wide with a mixture of awe and lust. It was a look he had never seen before, and it sent a surge of masculine pride through him.

Rias leaned forward, her hot breath pressing over the sensitive head of his cock. Naruto shuddered, a low groan rumbling in his chest as he felt her breath on him. She took her time, her tongue darting out to flick at the tip, tasting the bead of precum that had gathered there. A low moan escaped her lips as she savored the taste. It was salty and a little bitter, but there was something else there, something uniquely him, that made her crave more.

Finally, she wrapped her lips around the head of his cock, her tongue swirling around the sensitive glans. Naruto's breath hitched, his hands flying to her hair, his fingers tangling in her crimson locks as he fought the urge to thrust forward and bury himself in her warm, wet mouth. He let out a guttural groan as she took him deeper, her lips stretching to accommodate his impressive girth. She was good, surprisingly good, as her tongue worked its magic on the underside of his shaft while she bobbed her head up and down.

For a moment, a flicker of pride ignited in Rias's chest. She was the Crimson–Haired Ruin Princess, after all. Of course, she would be skilled in this, just as she was in everything. She had read countless books, watched more than a bit of hentai, and had even practiced with Akeno. She was determined to show this arrogant Youkai that she wasn't some timid little girl he could push around.

She redoubled her efforts, taking him deeper, her throat relaxing to accommodate his length as she fought back her gag reflex. Her hands moved to his heavy balls, gently massaging them as she continued to suck and lick. Naruto was panting now, his hips starting to move in small, involuntary thrusts. A triumphant smile played on Rias's lips, hidden by the massive cock in her mouth. She felt like she'd finally taken the upper hand, and that the Youkai was at her mercy now.

But Naruto had other plans. Just as Rias was getting into a rhythm, feeling a surge of confidence, he tightened his grip on her hair. With a low growl, he took control.

A surprised gag escaped her lips as he thrust forward, burying his cock deep in her throat. Her eyes flew wide, tears welling up in the corners as he hit the back of her throat. The confidence she had felt just moments ago evaporated, replaced by a raw, primal feeling of submission as Naruto's power flared up, and an even more intense feeling of arousal. The sheer dominance he was displaying, the effortless way he was using her mouth for his pleasure, sent more lust racing straight to her aching core.

"Not bad, Rias–chan!" Naruto grunted, his voice a low, husky rumble that vibrated through her as he slammed his hips forward and used her face for his own pleasure. His hips bucked forward, slamming his thick rod into her waiting mouth over and over again as he facefucked her. Each thrust was powerful and deep, and with every plunge, Rias could feel her mind melting as she gagged and choked on the massive rod.

And, as she did, a small part of her that wasn't completely overwhelmed by pleasure started to panic. She was the Crimson–Haired Ruin Princess! The Heiress to the House of Gremory! She wasn't supposed to be acting like this and letting some random Youkai she had just met use her like a cheap whore! This was degrading, and beyond that, it was humiliating. But it felt so good, and that humiliation only made Rias's pussy throb.

Tears streamed down her face, mixing with the drool that leaked from the corners of her mouth. Her makeup was a mess, but she couldn't find it in herself to care. All that mattered was the overwhelming pleasure, the feeling of Naruto's cock pistoning in and out of her throat, and the intense, dominant aura that washed over her, demanding her complete and utter submission.

One of her hands drifted down her body, her fingers finding her slick folds. She was soaking wet, her juices flowing freely as she started to rub her clit in tight, frantic circles. The dual sensations of being used so thoroughly and touching herself were too much. A muffled moan escaped her lips, lost around the thickness of Naruto's cock as she plunged two fingers inside her dripping cunt, pumping them in and out in time with his brutal thrusts.

"Fuck, you're not as innocent as you look, eh?" Naruto groaned, his hips moving faster as he felt her throat constrict around him. The sight of Rias, her face a mess of tears and drool as she was being face–fucked by his cock and furiously masturbating, was a sight he would never forget.

His words only spurred her on, her fingers moving quicker as she reached the edge of climaxing. The humiliation, the degradation, and the primal pleasure that came from his power pressing down on her, combined with the dominance he showed her. It was all too much, and with a loud, muffled cry, she came, her body convulsing as a powerful orgasm wracked her frame. Her walls clamped down on her fingers, a gush of fluid erupting from her as Naruto did one final thrust, shoving her long cock deep in her throat as her face pressed into his thighs. Her body went limp, her mind going blank as she was lost to the pleasure.

With a grin, Naruto finally pulled back, freeing his massive cock from her throat. She looked absolutely wrecked. Spit and tears covered her gorgeous face, her makeup was completely ruined as mascara ran down her cheeks, and a single string of drool ran from her bottom lip down to her chin. Her lips were swollen and red, and her blue–green eyes were glazed over with a hazy, unfocused look. She looked like she had been thoroughly used, and the sight of it made Naruto's cock throb with arousal. He had reduced the noble devil to this, a trembling, submissive mess.

Rias collapsed back onto the couch, her chest rising and falling with each ragged breath as she tried to calm herself down from the intense face–fucking and the even more intense orgasm. Her body was slick with sweat, and her mind was still reeling. She couldn't believe what had just happened. She had never been treated like this before, as she had never been so completely and utterly dominated. And, to her shock and shame, she had loved every second of it. The feeling of being used so roughly, of being at the mercy of a man so much more powerful than her, had awakened a deep, primal part of her that she never knew existed.

She looked up at him, her eyes filled with a mixture of awe, lust, and submission. She saw him towering over her, his massive, glistening cock standing at attention, and his power pressing down on her. The urge to fully submit became too much, as any resolve she had to resist the Youkai's will was lost.

Naruto saw the look in her eyes and smirked. He knew he had her now. He reached down, and with a gentleness that went against the rough dominance he had just displayed, he cupped her cheek and wiped away some of the strands of tears and drool.

"You took that well, Rias–chan," He said, his voice a low, husky rumble that sent a shiver down her spine. "Are you ready for the main event?"

Rias could only nod, and answer with a shaky, "Y–Yes," 

"I can't hear you," Naruto said, his smirk widening as he leaned down, his face just inches from hers. "Tell me what you want, Rias–chan."

"I... I want you," she stammered, her blush deepening as the words left her mouth. "I want you to take me. Please, Naruto–kun... I need your cock."

A triumphant grin spread across Naruto's face, and he nodded.

"Turn around," he said simply, but to Rias, it was a command that she had no chance of resisting. Her body moved on its own, a puppet guided by his will and the sheer dominance of his power.

She scrambled onto her hands and knees on the plush couch, the sudden movement making her head spin. She felt a flash of embarrassment, a brief moment of clarity where the noble devil inside of her screamed in protest at being treated like an animal. But that scream was quickly drowned out by the deafening roar of her own lust, and the primal need to be taken and claimed by the powerful Youkai behind her.

Once she was on all fours, she looked back over her shoulder, her blue–green eyes hazy with a mixture of arousal and anticipation. She saw him stroking his massive cock, his eyes fixed on her upturned ass with lust in his eyes. The sight sent another stream of excitement through her, and she knew what he wanted.

Her cheeks flushed with heat, but she pushed past her inhibitions. Reaching back with both hands, she grabbed onto her large, round ass cheeks. With a deep breath, she spread herself open, exposing her most intimate areas to his hungry gaze. Her tight, puckered asshole was on display, and just below it, her dripping, virgin pussy. She was completely exposed, completely vulnerable, and completely at his mercy. And the thought just made her more aroused than ever before.

She wiggled her hips, shaking her massive ass back and forth, and creating an enticing invitation that was both desperate and seductive. Her movements were clumsy, her mind reeling with submission and pleasure, but it only made the sight hotter for Naruto. Her body was a perfect hourglass, with a narrow waist flaring out into the ridiculously wide, full curves of her hips and ass, which seemed to defy gravity as they bounced with her movements.

"Please... Naruto–kun," She begged, her voice a pathetic, whimpering mess as she looked back at him with her tear–streaked face and hazy eyes. She was no longer the proud, noble devil. She was just a woman in heat, desperate for the man in front of her to claim her. "Take me... I need your cock inside of me... please..."

Naruto's smirk widened as he watched her. He had never seen a sight as beautiful as this. The proud and powerful Rias Gremory, on her hands and knees, spreading her ass for him and begging for his cock. It was a heady feeling, a rush of power and dominance that made him feel like a god.

Let's not get an ego now, alright?

Naruto pushed those thoughts away, as in the end, he was just doing this for the quest. Having the sexy woman begging for his cock was just a bonus.

"You really want this, don't you, Rias–chan?" He asked as he moved behind her, the head of his cock nudging against her slick folds. The contact sent a loud moan through her, and her body trembled.

"Yes! I need it! Please, Naruto–kun! I need your huge cock inside of me!" She cried out, her hips wiggling back against him, trying to impale herself on his thick rod.

"I'll give you what you want," Naruto grinned, and with a single, powerful thrust, he buried himself to the hilt inside her.

A strangled cry tore from Rias's throat, a mix of pain and overwhelming pleasure as her virgin walls were stretched to their absolute limit. She had never felt so full, so complete. The sheer size of him was almost too much to handle, but at the same time, it was exactly what she needed. She felt a sharp pain as he broke through her hymen, but it was quickly forgotten, washed away by a tidal wave of pure bliss that crashed over her. Her mind went blank, her vision swimming as she struggled to process the intense sensations. Her body convulsed, her walls clamping down on him as a powerful, unexpected orgasm ripped through her.

He didn't give her any time to recover. Gripping her hips with dominant, rough force, he pulled back until only the tip remained inside, then slammed back into her with even greater force. The couch creaked and groaned under the brutal assault, its legs scraping against the floor with each powerful thrust. Rias's world narrowed to the feeling of him moving inside her, the sound of their skin slapping together, and the raw, primal pleasure that consumed her every thought.

"Ah! Ah! Ah! Ah! Ah!" She cried out with every thrust, her body rocking forward with the force of his movements. Her massive tits swung back and forth beneath her, the heavy globes slapping against her skin with a rhythmic, fleshy sound that echoed through the room. Her fingers dug into the fabric of the couch, her knuckles white as she clung on for dear life. The pain was a distant memory, replaced by the intense pleasure that constantly rolled through her. She had never felt anything like this before, and she knew she would never be the same. She glanced back at Naruto as he pounded into her over and over again, her hair bouncing wildly as she wondered if he was secretly a sex–god and not a Youkai.

Naruto's hands left her hips, moving up her body to roughly grab her swaying breasts. His fingers dug into the soft flesh, squeezing and kneading the heavy globes with a possessive force that made her gasp. He used them as leverage, pulling her back onto his cock as he thrust forward, driving himself deeper and deeper inside her. His thumbs and forefingers found her hard, sensitive nipples, pinching and twisting them with a roughness that sent jolts of intense pleasure shooting straight to her core.

"Naruto–kun! Yes! Just like that!" She screamed, her back arching as he played with her tits. The combination of the rough pounding and the aggressive groping was too much. Her body tensed, her walls clamping down on him as another powerful orgasm washed over her. A gush of fluid erupted from her, drenching the couch beneath her as she came, her mind going completely blank as she succumbed to the pleasure.

Naruto just chuckled as he continued to pound into her, his movements relentless and unforgiving. He could feel her walls spasming around him, her body trembling with the aftershocks of her orgasm, but he didn't let up. He was in control, and he was going to take what he wanted.

He released her tits, his hands moving back to her hips. He admired the view for a moment, the sight of her massive, perfect ass rippling with each thrust, with her back arched in a beautiful curve as she presented herself to him. He raised one hand, then brought it down in a sharp, stinging slap against her right ass cheek.

SMACK!

A loud, fleshy sound echoed through the room, followed by a high–pitched yelp from Rias. A red handprint instantly formed on her pale skin, a stark contrast that was incredibly arousing.

"Did you like that, Rias–chan?" Naruto asked, a smug grin on his face as he rubbed the stinging flesh.

"Y–Yes!" Rias cried out, her voice a mix of pain and pleasure. "I... I liked it! Please... do it again! Spank me more!"

Her request was music to his ears. He raised his other hand and brought it down on her left cheek, earning another loud yelp from the devil princess. He alternated between her cheeks, spanking her in a steady rhythm as he continued to pound into her. Each slap was followed by a yelp of pain, which quickly morphed into a moan of pleasure. Her ass was soon a glowing red, a canvas of his dominance that showcased his dominance over her.

Her mind was a whirlwind of sensation. The sharp, stinging pain of the spanking mixed with the deep, aching pleasure of his cock pounding into her, creating wave after wave of pleasure that threatened to tear her apart. She had never experienced anything like this. The degradation, the submission, and the constant pleasure were too much. Any thoughts of being a noble devil vanished in that moment, and she felt like she was simply a whore for the Youkai behind her. A thought that, much to her shame, made her even more aroused.

"Fuck, I'm getting close," Naruto grunted, his thrusts becoming faster and more erratic. He could feel the familiar tightening in his balls, the tell–tale sign that he was about to cum. He felt the urge to pull out, to cum all over her red, glowing ass, to mark her as his. The thought of her perfect, pale skin covered in his thick, white cum was incredibly appealing.

But, just as he was about to pull out, he felt Rias's walls clamp down around him again, her body tensing as another powerful orgasm ripped through her. Her back arched, her head thrown back in a silent scream as her entire body convulsed. A gush of fluid erupted from her, drenching the couch beneath her as she came, her mind going completely blank as she succumbed to the pleasure.

"Don't... don't pull out," she begged, her voice a weak, breathy whisper as she came down from her high. "Please... Naruto–kun... cum inside me. I want to feel your cum inside me."

Naruto froze for a second, her words cutting through the haze of his lust. He hadn't expected that, but her desperate, breathy plea for him to fill her with his seed was a whole new level of submission that he hadn't anticipated.

"Are you sure, Rias–chan?" He asked as he continued to move inside her, his thrusts slow and deliberate as he teased her.

"Yes! I'm sure!" She cried out, her hips wiggling back against him, trying to get him to move faster. "Please! Fill me up! I want to feel your hot cum flooding my insides!"

Her words were the final straw. The last thread of his control snapped, and with a loud, guttural groan, he buried himself to the hilt inside her one last time.

"Here it comes, Rias–chan!" He grunted, and with a final, powerful thrust that made her cheeks clap loudly, he exploded.

A thick, hot torrent of cum erupted from the tip of his cock, flooding her insides with a warmth that made her gasp. It was a staggering amount, far more than she could have ever imagined, and it kept coming, with wave after wave of his seed filling her to the brim. Her womb was quickly filled to its limit, the excess overflowing and leaking out of her and running down her thick thighs.

The feeling of being filled so completely, and of being claimed so thoroughly by this powerful man, sent Rias over the edge again. Her body convulsed, her walls clamping down on him as another, even more powerful, orgasm ripped through her. Her mind went completely blank, her vision swimming with stars as the pleasure consumed her. Her arms gave out, and she collapsed onto the couch, her face pressing into the plush cushions as she trembled and moaned.

Naruto stayed inside her for a long moment, panting heavily as he savored the feeling of her tight walls milking him, before he finally pulled out. He was breathing a bit heavily as he looked down at the sight of the cum–filled, moaning Rias, whose stomach was bulging a bit from the flood of semen inside of her.

Fuck, that was intense.

But, as he stared down at the glassy–eyed woman, who was still recovering from her constant orgasms as her eyes nearly glazed over, an alert appeared.

[Main Quest Complete!]

[Steal the Occult Research Club]

[Part 1:]

[Seduce [Rias Gremory], and steal her from [Issei Hyoudou]!

Rewards:

[+1000 Gold]

[+Starter Base]

[Good work, Naruto Uzumaki!]

Naruto blinked, surprised as the quest was already completed.

Damn, I don't have more time to work for the bonus conditions? If I knew that, then I wouldn't have rushed into this so fast!

Luckily, as if the system could read his mind, another alert appeared.

[The Bonus Condition will still be available until the time limit expires!]

[Bonus Condition:]

Have sex with [Rias Gremory] in front of [Issei Hyoudou]

Turn [Issei Hyoudou] into a cuck!

Bonus Rewards:

[+9000 Gold]

[+Start with a [Medium–tier] starter base!]

Time Limit Remaining: 5 Days

Alright! Nice–

Naruto gasped as an abruptly warm sensation shot through him, and he looked down to see that Rias had crawled off of the couch, leaving a trail of sperm and drool trailing behind her, as her thick red lips kissed the tip of his cock. She leaned forward, her tongue trailing along his rod as she licked off the mixture of sperm and her juices that was on it.

"What are you…" Naruto trailed off, looking at Rias confusedly, who just looked up at him with lust–filled eyes.

"The contract was for a whole night, Naruto–sama," She muttered, licking his balls as she sent pleasure coursing through him, "I'm yours until the sun rises, Naruto–sama…"

She's using 'sama' now? This girl really is crazy.

But Naruto just grinned, reaching down as he grabbed the woman by her hair and guided her mouth back around the tip of his cock.

Nothing personal to whoever this Issei Hyoudou guy is, but…

As Naruto looked down at the horny, impossibly gorgeous woman sucking his cock, he definitely didn't intend on this being a one–time thing.

Your girl is mine now. But I need that bonus condition, so I guess you'll know that soon enough.

Chapter End

Author's Note: Hope you enjoyed. Doing a maledom story this time instead of femdom. There will be NTR, but Naruto will always be the one doing it. I'll probably continue this if people are liking it.