"If Onii-sama and Onee-sama have grown close... then, in essence, Kotoha would be Onii-sama's true younger sister, wouldn't she?"
"Yes, that's right. In the future, anyway."
This was Kotoha's comment on Shino and me becoming lovers, followed by Shino's response.
I thought she was looking too far into the future, but Shino's response risked derailing the conversation—no, it froze me in place, leaving me speechless.
Tsurugi Shino is a woman who spouts jokes at every opportunity, making it hard to discern the truth or her true intentions. But the reason her intentions are so hard to pin down is that her jokes often exaggerate truths she doesn't mind becoming reality.
In other words, whether Shino's words are sincere or just a joke, she's clearly supportive of Kotoha becoming my younger sister in the future. How can I remain calm?
Kotoha wasn't just mildly interested; she seemed downright delighted.
If that was the case...
Squelch, squelch, slurp...♡ Onii-sama's Cock-sama... So thick, hard, and hot again today...♡ Haaah... Kotoha's burning up...♡
Smmack...♡ Mmm, mmn...♡ You're so lucky, you know. Having your girlfriend and her younger sister lined up like this... Slurp...♡ Now, let me lick your cock, kitty...♡
This rotten life was only going to get more rotten.
On the bed, Shino and Kotoha leaned in close, lined up side by side. Completely naked, the sisters held hands and pinned me down, wrapping their arms around my cock. They licked me simultaneously from both sides.
"I can't deny I'm in a good position... But it was Shino who said she wanted to try Sister Bowl, right?"
The depraved spectacle before me—the two women, sisters, performing fellatio on me—combined with the thrill of transgression and superiority, intensified the pleasure from their warm, soft, and slick tongues. I felt like I might ejaculate at any moment.
"Yes, exactly. Gouji-kun, you've never written about a three-way before, have you? Why not base a story on this experience? A multiple-heroine story... You could even write it, Kotoha. Wouldn't you want to read about a heroine modeled after yourself?"
"Slurp, smooch... Kotoha as a heroine... being defiled, trained, degraded, ruined... all on paper..."
Her expression was distant, as if she were witnessing not the reality before her, but a scene unfolding in her imagination.
It was the very picture of someone lost in thought.
This scene, this pose... it's the kind of thing you'd expect to see in a movie, the kind of sight that's both endearingly vulnerable and stirring of protective instincts. It's as if this moment encapsulates the very essence of Tsurugi Kotoha.
"Kotoha... belongs to Onii-sama. This body, this heart, everything... is an offering to Onii-sama. I wouldn't permit anyone else to touch me... mmn, ahm, chuu, chuu...♡ nn, ahf... The thought that Kotoha's devotion to Onii-sama... reduced to mere words, exposed to public view, and even used by others for masturbation... haaah... it makes me so aroused...♡"
Even as she spoke, Kotoha took the glans between her lips, giving it a gentle nibble. Her tongue then slid further down to the glans' base, beginning to make soft, wet sounds.
Is she truly aroused, unable to hold back? Though her initial awkwardness has faded, her fellatio still feels more endearing than pleasurable.
Chup, chup...♡ If I can be of service to Onii-sama, there is no greater joy for Kotoha. If it is your wish, then...
"No, Kotoha," Shino interrupts, leaning close to Kotoha's small body and peering into her eyes. "You can't just entrust everything to others. You need to express your own desires. A younger sister's selfishness is cute, as long as it doesn't go too far... Chup, slurp♡"
She's absolutely right. While Shino can sometimes be overly assertive, Kotoha could afford to be a little more proactive and ask for what she wants.
I want to agree, but the peculiar atmosphere of having a serious conversation while receiving and giving fellatio is making me a little aroused, which I find slightly unsettling.
"Oh? ♡ Hehe, your cock just twitched. If we keep this up, Gouji-Kun won't be able to calm down. Maybe we should let you come first before we have our serious talk. Slurp... smooch... smooch...♡"
"Yes, Onee-sama... smooch... smooch... slurp... smooch...♡"
Two pairs of lips and tongues working in unison on a single shaft.
The beautiful sisters leaned in from either side, one stimulating me vigorously, the other more gently.
Their connected hands, still wrapped around my cock, moved slowly up and down, adding a loose, rhythmic pressure. Even though we were supposed to be having a serious conversation, I couldn't take much more of this.
Their lips were fresh and springy, their tongues soft, their hands slick with sweat. Being bombarded with multiple types of pleasure simultaneously, I felt like I was about to come at any moment—right when...
"Hey!"
I couldn't tell whose voice it was. My feverish mind, barely holding back from climax, couldn't process it clearly. It might have been Shino, or Kotoha. Or maybe they both said it in perfect unison.
Squeeze.
The sisters, acting simultaneously, each took one of my testicles in their free hands and gave it a gentle squeeze.
In that instant, I felt a surge of pressure from below, as if something was being forced out.
"Ah—!"
There was no time to react.
Gush, splatter, spurt!
Without warning or signal, the slight pressure on my testicles forced thick white fluid to erupt violently, showering both of their faces. Their eyes remained closed as they simply endured the spray, their lips parting slightly as their bodies trembled minutely until the release finished.
The jelly-like substance clung to their skin—though this was likely just my perception as the one who had just come. Still, it seemed to blend almost naturally with their pale skin.
"Heh heh... Onii-sama, you've dirtied us..."
"Yes, we've both been tainted by this cock, haven't we? Sisterly filth together... Mmm, slurp... squelch...♡"
The two sisters wiped the semen from their faces with their fingers, then brought those dirty fingers to their mouths and sucked them clean. They turned toward me with deliberate provocation, the lewd wet sounds echoing lasciviously.
"Kotoha, there's still some here."
"Onee-sama, and here too..."
They wiped away the semen from each other's hidden spots, missed by their own efforts, and then...
"Open your mouth... Me too? Mmm, slurp..."
"Onee-hyama, just like Akahyama... Nnn, smooch, squelch...♡"
We began sucking each other's fingers. I might be witnessing something extraordinary right now.
I'm not particularly knowledgeable or interested in yaoi or that sort of thing, but even I can tell that the scene unfolding before me is incredibly erotic.
After all, what the beautiful sisters are slurping is my semen.
"Squelch... Hehehe. Now then, shall we resume our serious talk? Hey, Gouji-Kun... Gouji-Kun?"
"Huh? Oh, right. Let's talk seriously."
Suddenly addressed, I snap out of my daze and realize I'd been staring, transfixed by the scene. It wasn't because I thought it might be useful for reference or anything; I was simply burned by the sheer eroticism of it.
Feeling a little embarrassed, I recall the serious words I was about to speak earlier and start voicing them from where I left off.
"I'm grateful for everything you do for me, Kotoha, but I feel bad that I haven't done anything for you in return. I wish you'd be a little more selfish sometimes."
"Don't apologize. I do everything because I love you. I'm just glad you're willing to spend time with me like this."
"Well, I'm just as much 'spending time' with you as you are with me, so we're even. But since you're usually so kind to me, I want to do something nice for you too."
"Right. You're younger than me and my younger sister, so you should play that up. In practical terms, just start making little requests."
"U-Understood..."
Shino stole all the good lines. Her half-teasing remark actually had some truth to it. Even if we were just acting, it was a bit of a stretch for Shino to play the younger sister role—Kotoha was clearly more suited to it.
"Onii-sama..."
And now, the answer to what Kotoha's "plea" would be like, and how she would go about it, began to unfold before me.
Kotoha rubbed against my chest, acting coy. Her usually reserved and self-effacing demeanor, mixed with the childlike innocence in her eyes, made her look utterly adorable. Cute, my rational mind thought.
But instinctively... the soft, smooth sensation of our skin pressed together. Then, slowly, Kotoha wound her arm around my neck, her body sliding upward against me, her nipples chafing against my chest and demanding attention. They felt soft and pliable, like tiny gummies. I wanted to play with them in my hands.
"Onii-sama... I implore you to use me as inspiration for your writing. Not just in this reality, but in the world of words as well. I want you to defile me, to commit every imaginable violation that's impossible in reality... to degrade me, humiliate me... to sully me...♡"
The content of her demands held no trace of cuteness, yet how could I possibly refuse when she pleaded with that upward gaze? I recalled something Shino had once said to me: "You look like the type who wouldn't be able to resist being pushed around. You'd probably cheat."
I didn't want to think of myself as a cheating man, or someone with no self-control... But sadly, I couldn't deny it.
"Fine. I'll give it a try. I'll make Kotoha a heroine in a magnificent erotic novel."
"Judging by that statement alone, it sounds terrible."
"Shino-san, could you just be quiet for a moment?"
Even I thought it was a terrible declaration, but since she asked, I had no choice.
"Heh... Thank you, Onii-sama. Now Kotoha... will be just like Onee-sama. A matching set."
Kotoha turned to Shino, smiling gently as she spoke. Under her gaze and words, Shino's eyes widened slightly more than usual, and she stood frozen for a moment, blinking repeatedly.
"...Well, Kotoha. Even though you're my younger sister and we share the same blood, I can't help but feel a flutter in my heart."
I understand. Somehow, it's like... witnessing something like beautiful sisterly love, or something sacred.
How wonderful it is to have a brother you share blood with, I was thinking, in the midst of it all.
"Heh heh. Onii-sama... In this reality, Onee-sama is your lover, so in the world of literature, could you please make Kotoha your lover?"
"Huh?"
Our startled cries overlapped, harmonizing with Shino's.
Kotoha pressed herself against me, her petite frame rubbing against mine. Compared to her sister, her more modest chest brushed against me as she clung close, slithering up my body.
Amidst the softness, two small, gummy protrusions—one on each side—asserted their presence with a squishy, chewy resilience. At the same time, they quietly testified to Kotoha's arousal—her sexual excitement and desire.
Of course, Kotoha must have known this too. In other words, this was a deliberate act—an overly blatant temptation and plea.
It was exactly like something a heroine from an erotic novel would do—
"Kotoha, don't you think that's not quite proper?" her sister said. "Let's see, what's wrong with it... Oh yes, it's because you have to earn what you want through your own efforts. If you want to steal my position as the main heroine, you'll have to work harder to impress Gouji-Kun—"
"Utter nonsense," Kotoha retorted, turning slightly to glance over her shoulder at her sister. Her serene expression remained unchanged, as if she hadn't even blinked from the moment she made her proposal to me to her confession to her sister.
She said it was a joke, but is that really true? Isn't there some truth to her words? If so, how much of it is serious, and how far does it go? Ugh, this is hopeless. Her expression is even harder to read than Shino's. I can't make sense of it at all.
"S-So, it was a joke? That's good. Heh, heh-heh, I let you get one over on me this time."
I thought I'd told her to be more selfish, but Shino's cheeks are twitching. In short, even her older sister has never seen Kotoha, usually so quiet, reserved, and demure, act so provocative before.
Shino has long been worried about Kotoha's passive, self-effacing personality.
She probably intended to ease Kotoha into change gradually, but contrary to Shino's expectations, Kotoha had leaped two or three steps ahead in one go.
"You're overreacting. What, did you actually like being the heroine?"
"Of course I do! I have pride, you know. For a long time, I—the model for the heroine—was the one having sex with the protagonist. To have my role stolen by some newcomer? That's just pathetic."
She almost said "I" there. I bet Shino feels the same way. I don't know how serious she is. Maybe all those words were completely sincere.
That's why... even in this reality, I can't help but wonder if Kotoha is still targeting me.
Ah, no, forget it. Saying any more would be too self-conscious.
"Kotoha would be content to be the second... the woman loved after Onee-sama. So please, lavish your affection on me as you will."
In the past, every word that came out of Kotoha's mouth was taken at face value, exactly as she said it.
But if she's learned to tell jokes—especially ones like Shino's... it's enough to give you heart palpitations.
"Hey, Kotoha."
"Yes, Onee-sama?"
"If Gouji-kun's affection were to be shared between the two of us, what percentage would you want?"
"Four to six, perhaps? Forty percent would be more than enough for me."
"You're quite ambitious, aren't you?"
The Tsurugi sisters chuckled and locked eyes, the sound of their laughter lingering in the air. It felt as if sparks were flying where their gazes collided.
"Well, fine. In the end, it's Gouji-kun who will decide."
"Yes. Everything depends on Onii-sama's will."
I'd anticipated this, but I didn't want to be drawn into it now. I could feel the weight of their gazes pressing down on me.
"So? What will Gouji-kun do?"
Shino pursed her lips, her expression coaxing.
Kotoha closed her mouth, staring at me intently, her gaze pleading.
Shino is my girlfriend. Normally, I'd just give in to her demands, and that's what I intended to do.
But... given my woeful track record with women, being asked to love two women at once is simply impossible. The very premise of the question—"How can I love two women?"—is flawed. It can't be done.
I love Shino. There's no doubt about that. But the feelings I have for Kotoha are undeniably positive as well. Besides, even though the Tsurugi Sisters had given their consent, I'd been sleeping with both Shino and Kotoha while I was with Shino. That means I have a responsibility to Kotoha too.
What should I do?
What can I—
After much deliberation, I placed my right hand on Shino's shoulder and my left hand on Kotoha's shoulder... and then pushed them both down.
"Who decided that my limit is just ten percent? For Shino and Kotoha, I'll do more than they want—far more. I'll keep pushing myself until I can't take it anymore. Is that enough for you?"
What should I do? It's obvious. I have to change. I need to satisfy both of them.
Still, I can't escape their questions. Even if they're dissatisfied or criticize me, it's understandable—but...
"...Yes♡"
It's as if a switch has been flipped.
Their smiles, which had seemed almost amused moments before, now melt into a trance-like, blissful expression.
Their cheeks flush crimson, their lips part slightly, corners curling into a relaxed smile.
"Heh-heh-heh...♡ Your eyes are lovely. Sharp and glittering, full of raw, bestial desire♡ Heh, my heart, my uterus, it's throbbing... They're pleading so sweetly, so desperately, for you to take me, to fuck me...♡"
"Yes...♡ Heh, just one word, and our hierarchy is settled. Onii-sama is above, Kotoha and I are below, both equally positioned to plead with him for the blessings of Cock-sama... Compared to that, the superiority between Kotoha and me is a trivial matter."
"Hmm, I suppose so... Or is that so? Well, never mind. More importantly, Kotoha."
"Yes, Onee-sama."
The masochist sisters met each other's gaze, nodded, and drew closer, entwining their bodies. Shino lay beneath, Kotoha above, forming a two-layered stack.
"Master-Sama... These are the two masochist cunts you've trained, you've perfected. Mine is optimized for your cock, a personal onahole made just for you. It's also your lover pussy, versatile enough to handle everything from tender love scenes to rough, moaning-filled, no-holds-barred cock-on-cunt action."
"Kotoha's narrow hole hasn't been optimized to the same extent as Onee-sama's yet... But precisely because of that, I can offer you a nearly brand-new, tight sensation. This younger sister pussy is yours to use whenever lust stirs in you, as casually as going to the bathroom."
Shino spread her legs wide, as if to display them, and Kotoha followed suit.
The two exposed female slits glistened with honey-like moisture, shining with an eerie luster.
Before them stood neither a cool seductress nor a demure Yamato Nadeshiko.
These were simply two females, driven by primal instinct, unable to suppress their human intelligence-fueled lust, and making no attempt to hide it.
Just two females, or perhaps two beasts.
Once, I averted my gaze from the two of them to the ceiling, taking a deep breath.
As I inhaled through my nose, a faintly sweet scent tickled my nostrils.
"Heh heh... I wonder. I put on a show to get you to fuck me, but I'm not sure if you're in the mood."
"Ah, of course. I'm torn between which one to use first. So—let me check how you feel."
With that declaration, I approached the two women and grabbed Kotoha's small buttocks. Though petite, there was enough flesh to grip firmly. Being careful not to hurt her too much, I gently tightened my grip, and Kotoha's body shuddered violently.
"Let's start with Kotoha."
"Ugh!"
I pinned both women down and thrust my cock into Kotoha's hole.
True to her word, it was tight, clamping down on my cock like it was trying to crush it. Though snug, the abundant love juice made movement relatively easy. But even that slight friction against my sensitive glans meant I'd probably come too quickly if I moved too vigorously.
"Next is Shino."
"Kuuu... Haaah...♡"
Then, I pulled out and thrust into Shino's opening below.
Shino's hole, perhaps more accustomed to this than Kotoha's, clung to me with a sticky, almost viscous tightness, like I'd become trapped in a warm, bottomless mire.
Yet, with Kotoha riding atop me, the vaginal muscles seemed to grip me even more intensely than usual. The suction was both soft and fierce, like being drawn into a vacuum.
Just to compare the sensations, I made a single in-and-out motion, plunging into each of the beautiful sisters' vaginas in turn.
There could be no greater indulgence. When I withdrew my cock, it was slick with their love juice, glistening unnervingly.
"Haa... Haa...♡"
"Mmm... Mmm... Haa...♡"
I'd barely even entered them... yet that alone was enough to melt them, their eyes fixed on me with eager anticipation. Hot breath puffed from their parted lips, and their hips twitched slightly.
Now, which one should I start with? It's a truly agonizing decision.
"Alright. Kotoha first!"
"Ugh... Mmm... Ah! Cock-sama! Cock-sama's inside me...!"
I chose Kotoha first. While Shino stood with a faint smile, seemingly composed, Kotoha gazed at me with tear-filled, yearning eyes, clearly at her limit.
If I were training Kotoha's masochistic tendencies, I might have made her endure it, but she had only recently awakened as a masochist. There was no need to rush.
"Ahh... Eep...♡ Oh, Onii-sama... Every time your thick Cock-sama moves... it scrapes me raw...♡"
Kotoha murmured incoherently. Normally, her limbs would have entwined around me, but now her body was facing Shino, leaving me vulnerable to a rear assault.
Perhaps due to her personality, Kotoha couldn't bring herself to cling to Shino. Instead, she stretched out her hand as far as she could, grasping the bedsheet and struggling. Honestly... it made me want to torment her more, to make her even more disheveled.
"My pussy's flesh... my reason is being worn away...♡ By Onii-sama and Cock-sama... I'm being filled... my entire life is being lost... the heat, thickness, and hardness of Cock-sama... are being carved into me...♡ Kotoha's entire life... was only for meeting Onii-sama...♡ This is nothing but preparation... for my memory to be erased by Cock-sama... to be transformed into a masochist...♡"
She was truly brave, endearing, and lovely.
Kotoha's words gave me a sense of superiority, sending shivers down my spine.
To make a younger, refined girl say such things...
"Kotoha's such a slutty girl... she practically begs to be trained."
"Yes... Kotoha is a depraved masochist, a woman who craves humiliation!"
Even as she spoke, her body trembled slightly, as if her words alone could arouse her.
Her already impossibly tight hole, so narrow it felt like her inner walls were being scraped raw with each movement, contracted even further, clenching down around me.
Still, I thrust my hips, maintaining a steady rhythm of shallow thrusts.
"Onii-sama...♡ Please, love me for a long time. I'm still imperfect, a work in progress, an incomplete masochist, but... you can enjoy the changes I'll undergo. I believe you'll find something different in me than you did in Onee-sama. So...♡"
"Of course. I'll make you into a magnificent masochist."
Kotoha twisted her neck and body, straining to face me directly as she pleaded, clinging to my every word.
Kotoha had been devouring my erotic novels for a while now, so she clearly had some foundation. Still, she lacked both experience and self-awareness. No wonder, given that her point of comparison was Shino, who had such an extreme masochistic fetish.
Tainting an innocent being with one's own color—that's every man's dream. It's a sexual fetish with a long history, dating back to Prince Genji. Though the author of that was a woman, mind you.
Putting that aside, since it's what Kotoha wants and what I want, there's no problem.
That color—in other words, to dye her completely masochistic, body and soul.
To achieve that, I raised my hand and gave Kotoha's buttocks a sharp slap.
"Hiiin?!"
With a high-pitched smack, Kotoha's body jerked.
A faint blush lingered on her small, porcelain buttocks.
"It hurts... but it feels good... Ahh... This is masochism...! Onii-sama... Please hit me more! Punish this naughty, wicked Kotoha!"
Even when she pleases me, I can't help but punish her when she begs in that cool, trembling whisper.
Her voice is the kind that makes me want to hear more. It's like adding firewood to the dark flames burning deep within my heart.
Slap, slap! I spank her buttocks repeatedly. After an equal number of slaps on the other cheek, her reddened buttocks tremble slightly.
"Aah! Hyaa! Please, spare me! Let me serve you properly as a mature masochist! Ahu! Ahun! If Onii-sama keeps spanking my sister's bottom, I'll become a disgraceful masochist, unworthy of being your Younger Sister! I'll turn into a useless little sister, unfit for both Onii-sama and Onee-sama!"
Kotoha screams and gasps, shaking her head from side to side as if trying to escape the overwhelming pleasure. With each pause in her words, the muscles of her vagina, tightly gripping my shaft, squeeze rhythmically, trying to milk every drop of semen from my root.
We were both nearing climax. Kotoha, whose voice is usually as cool and refreshing as a mountain stream, was now panting out lewd words in a heated, husky tone. Her narrow pussy was clenching down on my cock with relentless spasms, driving my desire to ejaculate higher and higher.
So I raised my hand again—
"Aah! I'm so sorry! Kotoha can't take it anymore...! Aah! I'm coming! I'm coming! Onii-sama! Watch Kotoha's masochistic orgasm! Watch me come while you're watching—♡"
This time, I struck her crimson buttocks with even greater force than before.
"Ugh?! Fuaah! Aaaaaahhhhhhh!"
Bjuuk! Bjuur-bjuuk-dobju-bju-bjuu!
The moment I slapped her, her pussy tightened around my cock with unprecedented force, as if in response. The pressure forced the semen out in a violent spurt, as if it were being squeezed from a tube.
Kotoha's slender body arched back like a bowstring stretched taut, convulsing violently.
The spasms caused her hips to rub slightly against my shaft, and her oversensitive glans, still in the throes of ejaculation, continued to spurt semen.
It felt as if every ounce of pleasure she was given was transforming directly into spurting semen.
If measured precisely, the continuous ejaculation likely lasted only a few seconds. Yet the pleasure coursing through my erect cock during orgasm felt so dangerously intoxicating that it gave the illusion of an endless loop.
"Ugh... Ugh... Ah... Haa...♡"
With a thud, Kotoha collapsed like a marionette whose strings had been cut.
Due to the height difference between the petite Kotoha and the tall Shino, Kotoha's face landed on Shino's ample chest.
Shino's eyes widened as her younger sister crashed into her with force, but fortunately, the soft cushion of her breasts and Kotoha's slender, lightweight frame meant it didn't hurt.
"Ugh... Sis... Sama..."
"Heh heh heh. You were adorable, Kotoha. Rest for a bit now."
Shino gently touched Kotoha's body, slowly rolling her off and settling her on top of her own.
I wondered if she was okay with giving up the Sister Bowl she'd been craving, but I suppose she didn't want to drag her exhausted younger sister into her games. Proof of this was how Shino deliberately put some distance between them. Though, since it was a single-person bed, it remained cramped as ever.
"Master..."
Then, turning her gaze to me, Shino purred my name in a seductive voice.
"Did seeing your younger sister suffer excite you?"
"Yes, that's right...♡ Seeing my cute little sister getting her bottom spanked... Before I felt it was painful or pitiful, I felt... jealous...♡"
Her expression was dreamy and melted, her eyes glazed. Her slightly parted lips released troubled breaths, their dewy softness stirring me.
"The piston-like thrusts from Kotoha, who was on top of me, were transmitted through her body... ♡ It felt as if I was being violated myself. It was like watching my own defilement from outside my body. But the shocks that reached me were so faint... teased, teased... ♡"
Her fingers traced circles on her lower abdomen.
Beneath that skin lay an organ that men lack—the uterus. Perhaps more than any other part of the body, it could be considered the most vital, a place brimming with the mysteries of life: the instinct to conceive, give birth, and perpetuate the species.
A place that was pure and untouched before I claimed it.
"Master... please use my pussy—the one that has taken your cock countless times, been defeated by it each time, made to weep (whimper)... the one that has been molded into your shape, specialized in enveloping you, grown infinitely weak for your cock alone—please use this onahole of mine... ♡"
Shino spread her own slit apart with her hands.
The pale pink petals, unchanged since before she knew of defilement, were surrounded by... no, more than usual... they were soaked with honey, proof that Shino was aroused by this Sister Bowl scenario, the parallel fellatio, and her younger sister's lewd behavior.
Shino told me to treat her most intimate organ as a toy to satisfy my lust. This stemmed from her own sexual fetish—she derived excitement from degrading herself. Even understanding this, her plea was irresistibly alluring and lewd.
"You leave me no choice, you know!"
"Ugh—?!"
The moment I aimed, without warning or signal, I thrust all the way in at once.
To be honest, Shino's words had been sending shivers down my spine for a while... It was the culmination of my overwhelming desire to ravage her, combined with my consideration for her sexual fetish.
"Out of nowhere, a uterus kiss? What's this...♡"
Squelch, slurp, squelch, slurp!
Her eyes widened, her hips arched, and she gripped the bedsheet tightly.
Hearing her words alone, it sounded like a protest... but her eyes and lips remained soft.
So, I didn't take it as a protest. I judged it to be a kind of pleasure.
Having made that judgment, I decided to make her feel even more pleasure, going even harder.
From the moment I started thrusting, it was vigorous and forceful, my hips pounding against hers, my glans slamming against her cervix.
Shino's slender body would jerk slightly with each of my deepest thrusts, her abundant, abundant, abundant breasts bouncing.
As I was captivated by those soft, fleshy balloons or balls, something not skin-colored caught my peripheral vision.
It was the choker I'd given her, wrapped around her neck.
"You're wearing it today too?"
"Wait, but I'm just a female dog... Master's kept female, Gouji-kun's girlfriend, and your pet with a collar around my neck! I'm just a pet raised and trained solely for your cock and semen...♡ Proof of that is this brim I always wear!"
Honestly, I just thought it looked good on her, but since she's so happy and seems to like it, I'll let it slide.
The words "female dog" and "pet" still sting a little.
Just as I thought, if only she had those dog ears and White Brim from that one time, a slender arm slipped into view and placed a brim on Shino's head.
"Heh heh, what a charming little puppy you are."
Kotoha narrowed her eyes slightly, a small smile playing on her lips. Her face was still flushed, but she seemed to have regained her composure.
"Where did you get that? This brim?"
"I knew Onee-sama always carried it in her bag. But more importantly, Onii-sama, may I also touch your little dog?"
She carries it with her? I was about to be confused when Kotoha's next words registered.
"Ah, sure. Go ahead and touch her as much as you like."
"Thank you for this happiness."
Naturally, "little dog" here referred to Shino, who now had dog ears. As Kotoha gradually edged closer, Shino seemed to sense something ominous and reached out to stop her, but I wouldn't let her. I grabbed Shino's hands with mine, intertwining our fingers and holding them firmly.
"Huh? Wait, wait, both of you—Ngh!"
What was Kotoha doing as she edged closer?
Even I couldn't have imagined it, but it was simple and clear.
Kotoha pinched Shino's trembling nipple between her slender fingers.
"Wait, Kotoha! No! Gouji-kun! Master-Sama's huge cock is already driving me crazy, and now you're... my chest! My nipples! I'm such a masochist! Even when it hurts, it feels good!"
"I am aware. I wish to grant Onee-sama's wish to create a Sister Bowl."
"That's enough! It's already happening! You've already fulfilled that wish more than enough!"
As the piston thrusts continued and her chest was teased—perhaps because her younger sister was the one teasing her—Shino writhed even more violently than before. The grip of our clasped hands tightened, betraying her confusion and arousal.
"I wish Kotoha would grow up to be like Onee-sama..."
But Kotoha remained unfazed, as if the wind had blown her words away.
She kneaded Shino's breasts with a mixture of envy and resentment, pinching her nipples between her fingers, jiggling her breasts in rhythm with my thrusts—essentially doing whatever she pleased.
Is this what they call "Sister Bowl"? It's a tricky situation, but I'll worry about that later.
"Ah, no, just a little kiss from your cock on my cervix and I'm already falling...♡ Oh, my uterus is head over heels for this cock...♡ It's like my uterus has a brain—each thud reverberates through my head, leaving me unable to think...♡"
Her face was smeared with tears and drool, but her voice and expression were still meltingly soft. In front of Shino like this, it would be a waste of time to think about anything else.
"Ah, I know my body has already given in...♡ This cock is unbeatable! I don't even know how many times he's fucked me by now! Each time, I've come over and over...♡ My body knows this cock is meant to pleasure me, and it's practically begging...♡"
"Only your body?"
"...No, my heart too... All of me is begging for you...♡ With these dog ears on, speaking such lewd words, my pussy clenching tight... I'm begging for your semen! Give it to me!"
"If you want it, I'll give you as much as you can take! Shino, I'm going to come!"
"Yes, come! Spit out your lust on me! Ah, no, I'm coming! Coming, uuuuuuuuuuun!"
Doburyuburyu
"Heh... That was incredible, Gouji-kun. You're like a completely different person from the one who gave me that pure love. Back then, you were so tender and gentle with me, but today you're relentlessly pounding away with not a shred of consideration. It's like you've become the protagonist of your own novel."
After Kotoha left, Shino spoke in a surprisingly calm voice, almost her usual tone.
"Shino and Kotoha were unbelievably erotic. I just couldn't hold back my rationality, or something."
"Thank you. Heh heh, it's taken so long to reach this point."
"To reach...? What?"
I didn't understand what she meant and blurted out a question.
"To reach you. It's taken quite a while for you to become the protagonist, hasn't it?"
"The protagonist..."
I still didn't quite grasp it. As I tilted my head in confusion, Shino suddenly smiled her usual, mischievous grin. "Heh heh."
"If I... and Kotoha are the heroines, then naturally, we need a protagonist. The kind of protagonist you'd find in an erotic novel, paired with heroines like us. Gouji-kun, you've always been the type to go with the flow, haven't you?"
He didn't deny it.
Thinking back, it had always been that way. He'd always let himself be carried along, swept up, bodies entwined.
"It's not that I dislike that kind of thing, but given the heroine we are, the protagonist must be her master. Today, you approached us of your own volition for the first time. You asserted your will and became the superior being who dominates us. You've become a magnificent protagonist from an erotic novel."
"...This is the first time?"
"Yes."
He thought back.
Looking back, it all feels like I was constantly being seduced by Shino, egged on by her, swept up by Kotoha's outrageous behavior, and somehow getting worked up into a frenzy—well, that's how it seemed.
Thinking about it now, I feel a twinge of guilt. No wonder she thinks I'm good for nothing.
"Um... I'm sorry about that."
"It's alright. I wanted you to do it of your own free will. Gouji-kun, despite your... unique sexual fetish, you're actually quite a decent person. If I had asked you beforehand, you would have put up a mental block, wouldn't you? I wanted you to come to me because you truly desired it."
There was really no need to mention my "unique sexual fetish" just now.
Still... seeing Shino's smile, it's clear she's been waiting for this day for a long time.
"I told you before, Gouji-kun. It's like you've been trained to be Shino's ideal Master. And now, it's turned out exactly as I said."
Thinking back, I realized I had indeed said it.
And Shino, I'm pretty sure she never denied having those intentions.
In other words, was Shino looking for a partner like a romance novel hero to match her own heroine persona?
And had I been guiding her toward that all along?
"What a remarkably patient plan. What would you have done if I never made a move?"
"I wasn't particularly worried about that. Even with your decent personality, given your sexual fetish and overflowing libido, I figured that if we kept being intimate, that day would come eventually. What I didn't expect was—"
Shino suddenly stopped speaking.
"What didn't you expect?"
"...That I would fall in love with you," Shino murmured softly, averting her gaze.
Around her neck was the choker I'd given her, which she'd happily accepted as a collar.
...I was so embarrassed, I couldn't say a word.
"Putting that aside, you've truly become a magnificent protagonist. The result is flawless."
In other words...
It seems Shino raised me to be her ideal: the protagonist of an erotic novel.
To be fair, I've always been rather passive by nature—so much so that it hardly needs to be said.
Then she introduced the concept of master and slave dynamics.
She taught me real sexual acts with her own body.
She plunged me into a decadent pleasure so all-consuming that there was no turning back—and into Tsurugi Shino herself—and then, through her own will and initiative, she molded me into someone who craved it ravenously.
Is that... the way an erotic novel heroine raises her protagonist?
"Hey, Gouji-kun. Now that you've become the protagonist, our reality has truly become an erotic novel world. And in erotic novels, the story always ends with the protagonist and heroines spending endless days immersed in depravity. So, you see... our days together can last forever. Right?"
"...I'd like that to be true."
"It will be. If we join forces... and bodies."
"One too many words."
"You should know by now what kind of woman I am. And it's not a mistake, is it?"
"Still..."
Still, even if it's true, that doesn't mean you should say everything that comes to mind. That's what I thought, but I was smiling. Shino giggled mischievously.
Shino was right. That's just the kind of unnecessary thing she always says, and I've come to love that about her.
As long as I'm the protagonist and Shino and Kotoha are the heroines, my erotic novel will continue. Endless days of lewdness, depravity, and transgression—all of it feels so good.
Thinking about that, my cock, which had already ejaculated multiple times today, began to regain its strength.
"Oh... oh my, hehehe."
"Shino, let's continue."
"Yes, gladly. I'll accommodate you as many times as you desire, even if I'm so dizzy I can't move. You can use my body however you like. After all, I'm your masochistic heroine."
I leaned over Shino's giggling body.
"Onii-sama... please don't forget about Kotoha."
Kotoha returned to the room and draped herself over my back, sandwiching me between the two beautiful sisters.
Soft, fluffy sensations pressed against my chest and back, and their limbs entangled around me, trapping me... though I had no intention of escaping.
From now on, I'll continue to embrace Shino and Kotoha, and sometimes they'll embrace me.
There will be times of pure love, when we clasp hands, kiss, and lazily entwine together, as well as moments when I'll spank their bottoms, bind their bodies, and tease them a little roughly.
The story Shino once described as a living ero novel shows no signs of ending, at least as long as I remain the protagonist.
"Gouji-Kun. May I have seventy percent?"
"Please give Kotoha forty percent."
As long as they remain heroines of erotic novels...