A/N:
Not an actual ch1 but is a proof of concept please enjoy!
—
All I did was go outside, and some random crazy woman I don't even know just stabbed me! I better wake up in a hospital… or so help me, I'm declaring war on humanity!"
Then he woke up.
'Odd… why do I feel so light?'
Looking down was a mistake he would regret forever.
His body wasn't his anymore. In its place stood a medium-sized anime girl with golden hair and a black "$" hair clip, golden eyes, demonic wings, horns, and a tail. She wore black gloves, a white blouse with a black tie, and a grayish skirt, completing the picture of deceptive innocence.
Then it clicked.
A voice — not external, but inside his mind — whispered two words:
Endless Avarice.
She immediately understood.
This power allowed her to use effectively any ability in existence, fusion abilities, and even nonexistent powers, but only six at a time.
Slots seven and eight were already locked: Eternal Existence and Greed Derivation, safeguards ensuring the user's survival no matter what.
And just like that, she realized… she was no longer a mere man.
She was Mammon.
And she immediately gave in to her greed and creativity, conjuring her first ability:
Midas, the King of El Dorado.
It allowed Mammon to do literally anything with the concept of gold, including but not limited to:
Becoming gold dust.
Turning anything she touches, with intent, into gold.
Forging gold weapons.
Transforming into molten gold.
Teleporting to any location with gold.
Seeing and hearing through gold anywhere.
With a gleeful smile, she realized just how much fun the universe could be in her hands.
Then, for a split second, a thought crossed her mind:
"Overpowering the Overlord sounds like a blast!"
And with that, Mammon vanished in a flash of golden light, leaving behind a single, solid patch of gold grass as the only evidence of her presence.
(Overlord, new world - Season 2)
Entoma's vision blurred, her limbs barely responding. The Blue Roses stood over her, panting, weapons slick with her blood and ichor.
Then the world flashed gold.
The women turned, squinting against the brilliance. There, floating lazily above the ruined street, was a girl — no, a demon — with golden hair, horns, wings that shimmered like molten metal, and eyes that radiated pure indulgence.
"Ugh… humanity really is tasteless," Mammon sighed, brushing imaginary dust off her skirt. "Picking on a cute maid insect? How very original."
Evileye shifted her stance, readying her spells. "Who are you?"
Mammon's golden eyes gleamed. "A tourist," she said sweetly. "But I think I'll do a little redecorating before I go."
She raised a gloved hand. The ground beneath their feet shimmered — then solidified into pure, radiant gold. Armor, weapons, and even strands of their hair began to glint, turning metallic as if the world itself had betrayed them.
"W–What is this?!" Gagaran shouted, trying to move, but her greaves clung to the golden earth, fusing in place.
"Relax," Mammon said, twirling a lock of her hair. "It's just Midas, one of my little hobbies. Everything you touch, everything you are, becomes a little more valuable. You should thank me — you've never looked so expensive."
She stepped closer, every footfall leaving perfect golden prints. Evileye tried to speak a spell, but the moment she opened her mouth, golden dust spilled from her lips like glittering sand.
Mammon giggled. "Oh, don't pout! You'll chip the shine."
Then she turned to Entoma, crouching to meet her dimly glowing eyes. "See, little bug maid? I told you — I'll make their end beautiful."
The three heroes froze, trapped waist-deep in solid gold, unable to move or cast.
Mammon tapped her chin thoughtfully. "Hmm… too merciful?" she mused aloud. "No, I think I'll leave them like this. Maybe the humans will build a shrine around you — 'Three Golden Idiots,' sounds divine, doesn't it?"
Entoma's mandibles twitched in something resembling a smile.
"Don't thank me," Mammon said, waving a hand as she turned away. "Greed doesn't do charity. But for once I'll withold my invoice, and take you smile as payment now i could do you a favor so I'll do this."
She bent over picking up Entoma's lip bug blowing golden dust onto it which revived it but now it had a golden sheen. "Here you are there misery is my payment plus a cute girl likes you needs a golden voice to truly shine no?"
Then after handing the lip bug to Entoma she snaps her fingers, causing her and Entoma to vanish in a swirl of golden dust, leaving the Blue Roses gleaming like cursed statues under the dying moonlight then Evileye breaks free of her golden shell.
(Elsewhere — Kingdom Capital Outskirts, during Operation Gehenna)
The night sky above the burning capital shimmered crimson. Flames danced across rooftops as screams echoed in the distance. Amid the chaos, Jaldabaoth stood at the center of his infernal army, the embodiment of calculated evil.
Demiurge, concealed behind his mask, was about to issue a command when the sky above him split apart in a shower of golden sparks.
The flames dimmed. The air itself shimmered like sunlight on molten metal.
Then—she appeared.
A girl floated above the battlefield, wings spread wide, her golden hair shining brighter than the firestorm below. Her eyes were pools of avarice and amusement.
"Oh my~ what a lovely little inferno," Mammon said, descending lightly onto the scorched ground. "But really, red flames? So last millennium. You should try gold—it burns hotter and looks divine."
Demiurge blinked once, twice, his analytical mind already working overtime. "You… are not among my summons."
Mammon smiled sweetly. "No, darling. I don't take orders—I give them."
The air around her rippled, and for an instant, every demon in the area froze mid-motion, their greed—every scrap of it—siphoned into her presence like invisible threads.
"Who are you?" Demiurge demanded, his tone polite but edged with lethal curiosity.
"Mammon," she said simply, as if that explained everything. "You might say I'm in your department. Greed, avarice, wealth, temptation—sound familiar?"
Demiurge stiffened. "Mammon… the archdemon of greed."
"Was," she corrected, tapping her temple. "Now it's more of a full-time position. I'm the new model—smaller, shinier, and significantly more fun."
Her tail flicked lazily as she inspected the chaos. "I cleaned up a few pests on my way here. One of your maids was being bullied. Don't worry, I fixed it."
Demiurge's posture straightened almost imperceptibly. "You assisted one of Nazarick's servants?"
Mammon smirked. "You could say that. She's with me now—getting a little polish."
Then she turned her gaze to the flames, raising a finger. Gold light danced across the battlefield, and in seconds, the raging inferno transformed into liquid gold. The molten metal flowed like a living river, glinting in the moonlight.
"There," she said. "A touch of refinement. If you're going to burn a city, at least make it art."
Demiurge stared in silence for several long moments. Then, very carefully, he adjusted his mask. "Lord Ainz will wish to speak with you."
Mammon's grin widened. "Good. I was hoping to meet the master behind the curtain."
Demiurge tilted his head slightly, his diamond eyes glinting behind the mask. "How… intriguing. Few beings dare speak so casually of Lord Ainz Ooal Gown."
Mammon laughed softly, the sound like coins falling into an endless chest. "Oh, I've been called worse than casual, darling. Besides—if he's half as clever as I think, he'll want to meet me just as much as I want to meet him."
Her wings unfurled with a golden shimmer, scattering sparks of light that burned small runes into the ground wherever they landed. The demons nearby trembled—not from fear, but from instinct. Every creature of greed recognized its progenitor when it saw her.
"Tell your Overlord," she continued, "that Greed herself just walked into his world, and she's feeling generous."
[Demiurge - message: Narberal we have an unseen wild card i hadn't encountered for. A fellow demon so tell Lord Ainz that an individual named Mammon wishes to speak witj him oh, and mention she saved Entoma.]
(Meanwhile)
High above the city, Ainz rode upon a magic hoverboard beside Narberal in his adventurer disguise as Momon.
The usually unflappable undead stiffened the moment Nabe relayed Demiurge's words.
'Aaaaaa… calm down,' he told himself mentally. 'It's fine. It's just one of the Seven Deadly Sins—nothing too big.'
He nodded slowly, trying to keep his tone heroic and steady. "Hmm. So this… Mammon wants an audience, does she?"
Narberal, as stoic as ever, replied, "Yes, my lord. Demiurge also reports she revived Entoma."
Ainz froze again. Internally, panic screamed loud enough to echo through his nonexistent lungs.
'She what?! Saved Entoma?! That's… good, right? Probably. Maybe. Unless she wants something insane in return! No, no, no—calm! I am Ainz Ooal Gown! I will simply… hear her out. Politely. And hopefully not get disintegrated.'
Outwardly, he adjusted his posture with false confidence. "Very well. Let's return. I'll grant her an audience—if she's as powerful as her title implies, diplomacy may be… profitable."
[Mini Timeskip/Perspective Change]
'This place is so rad! I knew it was cool, but seeing Nazarick in person? Way better than the anime!'
Mammon spun slowly in place, golden eyes wide as she took in the grandeur around her. Every inch of marble, every glowing crystal, every layer of gilded architecture screamed wealth and power.
'Man, Ainz really went all-in on the gothic aesthetic,' she thought, tapping a clawed finger against her chin. 'I'd kill to get the blueprints—well, maybe not kill... okay, maybe just a little.'
Her boots clicked softly on the polished floor as she wandered deeper into the grand halls, her presence leaving faint gold footprints with every step. Lesser demons and undead bowed instinctively as she passed, though most didn't even understand why. Greed recognizes its queen, even when reason cannot.
Finally, she neared the massive throne room doors—just as they swung open on their own.
The sight beyond made Mammon internally squeal like a fangirl.
'Kyaaaaa! So cool! He's like Cid Kagenou if Cid didn't pretend to be the Eminence in Shadow—he just was.'
Despite the inner excitement, Mammon stepped forward with the poise of a monarch. Her golden eyes met Ainz's crimson orbs without flinching. She didn't kneel, but instead performed a respectful Japanese bow — deep enough to show sincerity, not subservience.
That small gesture stopped Albedo mid-outburst; her hands lowered, though her eyes remained wary.
Mammon straightened and smiled faintly. She clapped her hands together, her tone light but cutting through the tense silence.
"So, I'll get straight to it," she began. "I know what you're curious about. And yes—your lovely vampire's little... brainwashing problem?"
Mammon pointed directly at Shalltear, whose eyes widened slightly.
"I know who's responsible," Mammon said smoothly. "And I'm willing to share that information. But—" she raised a single finger, a golden spark flickering at its tip, "—nothing in life, or death, is free."
Her grin widened, sharp but elegant.
"I'm offering a deal. Simple terms, really: first, a place to stay. I doubt your Guardians want to crash in human territory same here definitely a no bueno, you know?"
She flicked her tail lazily, letting the golden shimmer of greed trail through the air like perfume.
"Second, I'll help you with your little revenge project. After all—" she winked, eyes glowing brighter, "the house always wins." After a brief pause she then ended her sales pitch. "Also i don't wanna stay permanently just until your done with your revenge seem fair?"
For several long seconds, the throne room was silent.
Ainz Ooal Gown, the Sorcerer King, Supreme Ruler of Nazarick… stared down at the golden demon who had just offered him a business deal.
Internally, his mind was chaos.
'WHAT?! The embodiment of Greed wants to MOVE IN?! What does that even mean?! Do I charge rent?! What if she decides to "own" Nazarick because it's shiny?! What if she turns the floors into gold?!'
He fought the urge to physically clutch his skull.
'No, calm down! Calm down! You are Ainz Ooal Gown. Supreme Ruler. Master of all. You cannot freak out because a tiny anime demon girl wants a room!'
Externally, Ainz leaned forward slightly on his throne, hands clasped regally.
"…I see." His tone was perfectly even, the kind that made even Albedo and Demiurge pause. "Your terms are… reasonable."
Reasonable?! his inner voice screamed. She literally just offered to help with the most dangerous operation we've ever planned in exchange for a BED!
Still, outward calm prevailed.
"Your power and knowledge would indeed be… valuable," he continued. "If you can deliver the information you claim, I see no reason not to extend temporary hospitality."
Albedo's voice, silken but tense, broke the silence. "My lord, do you truly believe this… being is trustworthy?"
Mammon's golden eyes flicked toward her, amused. "Oh, sweetie, no one's truly trustworthy. But at least I'm honest about it."
Demiurge, ever the analyst, smiled faintly behind his glasses. "A fascinating guest, indeed. I, for one, am curious to see how this… cooperation develops."
Ainz nodded slowly, trying to sound thoughtful rather than terrified. "Very well. You will be granted quarters within Nazarick during this… cooperation."
Mammon's grin returned, radiant and satisfied. "Marvelous. I knew you'd be reasonable."
She gave a playful two-finger salute and turned, golden motes swirling at her heels as she walked away.
Ainz waited until she was completely out of earshot.
Then his mental scream echoed through his soul:
'DEMIURGE, WHAT HAVE I JUST AGREED TO?!'
Before anyone could respond, Mammon's voice sliced through the tense quiet.
"As per the deal," she began, tone breezy as though she were discussing weather rather than world-shattering espionage, "the perpetrators behind that nasty business I call mind control were the Slane Theocracy."
Her tail flicked idly, scattering a few golden sparks. "They definitely didn't expect your pretty vampire here. The real target was a dragon—Downfall of Castle and Country was supposed to hit that, not your girl."
She tilted her head toward Shalltear, eyes half-lidded with amusement. "I'm guessing she charged in all willy-nilly, yes? Adorable."
Ainz froze; skeletal fingers twitched imperceptibly. Inside his skull, panic blossomed again.
'She knows the exact artifact and the entire plan?! We didn't even know which world item it was!'
Outwardly he bowed his head in a measured nod. "…I see. Your information is most enlightening."
Mammon folded her hands behind her back and smiled, sugar-sweet and dangerous. "Of course it is. Greed pays attention when someone's hoarding power they don't deserve. And honestly? I absolutely loathe purposeless mind control — it robs people of their freedom, which is the very thing I kind of need to exist. So those priests? I want to drown them in riches. Yeah. That."
The silence that followed was sharp enough to cut glass.
Then, predictably, Albedo stepped forward, her eyes blazing with protective fury. "How dare you speak so casually before Lord Ainz! Do not—"
"Albedo," Ainz said evenly, raising a hand. His tone was calm, but the faint tremor in his voice betrayed his nerves.
She froze mid-step, glaring daggers at Mammon but obeying instantly.
Demiurge adjusted his glasses, his tail flicking with interest. "Fascinating," he mused aloud. "A being who despises control yet embodies greed itself… How paradoxical. Tell me, Lady Mammon, what motivates such a creature to involve herself in our affairs?"
Mammon smiled, golden eyes gleaming. "Simple curiosity. And profit, of course. Greed doesn't take sides—it just collects."
Shalltear's crimson eyes narrowed. "You're awfully confident for someone who just waltzed into Nazarick uninvited."
Mammon turned to her, lips curling in amusement. "Oh, sweet vampy, confidence is what you get when you own everything worth being afraid of."
That shut Shalltear up, though her fangs clicked audibly in irritation.
Ainz, meanwhile, was having an entirely different conversation—with himself.
'She just verbally sparred with Shalltear and lived. Demiurge is intrigued, Albedo's seconds away from impaling her, and I—what do I even do with this?! She could buy Nazarick if she wanted!'
Out loud, his voice came out surprisingly smooth. "Enough. Lady Mammon's presence here is not an act of hostility. She has offered assistance and information of immense value."
Albedo frowned but bowed her head obediently. "Of course, my lord. If that is your will."
Demiurge smiled faintly. "Indeed. I look forward to seeing what our new… guest can accomplish."
Mammon gave a playful salute. "Oh, I'm sure we'll make golden memories together."
Ainz felt his nonexistent stomach drop.
'Oh no. She's punning already. This is going to be hell.'
Then, like a delayed explosion, the implications hit him square in the metaphorical face.
'Wait. "No bueno"? That's from Earth! From the 21st century! She's not from Yggdrasil—she's like me!'
His mind whirred like a processor overheating.
'She's strong, she knows about the Theocracy, she talks like a meme generator—and she's stuck playing her role because of her race and class! She's… she's literally me if I had picked a demon build instead of undead!'
Across the room, Mammon was absently admiring the golden reflections dancing across her claws, humming to herself as if she didn't just upend his entire worldview.
'Oh gods—no, wait—no gods! I can't let the others figure this out! If Demiurge realizes she's like me, he'll start worshipping her too!'
Externally, Ainz adjusted his posture, doing his best to project calm authority. "Very well. Lady Mammon, you shall be provided suitable accommodations within Nazarick. Consider it… part of our agreement."
Mammon's face lit up, her grin radiant. "Aw, thank you, bones-for-brains! You're a real gem."
Ainz froze mid-turn.
'Bones-for-brains?! She just called me—no, no, stay calm, she doesn't mean it insultingly. She's… she's just casually unhinged. Like Albedo on caffeine.'
Behind him, Albedo twitched violently, her smile straining. "Lord Ainz, shall I prepare the acid bath for this insolent creature?"
Mammon giggled. "Oh, don't be salty, Miss Lust! You can't melt gold, sweetie."
Demiurge pushed up his glasses, a glint behind the lenses. "Ah, fascinating… she knows precisely which buttons to press."
'Of course she does!' Ainz screamed internally. 'She's from Earth! She probably watches anime!!' he coughed into his skeletal hands. "Alright before we show you to your room I'd like to have a word with you Lady Mammon. Alone."
Demiurge's tail flicked once in curiosity, but he bowed with a composed smile. "Of course, Lord Ainz. Shall we withdraw?"
Albedo shot Mammon one last murderous glare before reluctantly stepping back, her smile brittle. "As you command, my lord…"
Shalltear's eyes darted between them, clearly itching to eavesdrop, but one stern look from Ainz sent her scurrying after the others. Soon, the massive throne room doors shut with a deep thoom, sealing the two of them inside.
The silence that followed was almost suffocating.
Mammon hummed cheerfully, her tail swaying as she admired the obsidian tiles. "Nice floor. I'd probably inlay some gold filigree though—really make the place pop."
Ainz let out a slow, steady breath. "Lady Mammon…" he began, trying to sound regal instead of exasperated, "you are… quite the unique guest."
She looked at him with a smile that was far too knowing. "Thanks, I get that a lot. Especially from undead overlords who accidentally isekai'd themselves into their favorite MMO."
Ainz froze so hard the sound of his joints locking echoed in the chamber.
'She knows! She knows! She knows!'
Mammon chuckled at his reaction, holding up her hands innocently. "Relax, bony. Your secret's safe. I just, you know… recognized the vibes. That awkward 'I have no idea how I got here but now I have minions and a brand' look."
He wanted to scream, but instead his voice came out hoarse and trembling with forced composure. "I… see."
"Don't worry," she continued, her tone softening slightly. "I'm not here to blow your cover or anything. If anything, I wanna help. You're building something cool here, and I get it. Power, purpose, a fresh start."
She smiled, faintly wistful. "Just… don't lose yourself trying to play god, okay? Even I learned that lesson the hard way."
Ainz blinked slowly, thrown off balance by her sudden sincerity. "You… learned it?"
Mammon smirked again, masking the flicker of emotion. "Greed always does. So—how about that room?"
(Mini Timeskip)
The luxurious chamber glowed faintly in shades of gold and obsidian, furnished in a style that screamed "extravagant guest, possible threat." Mammon lounged sideways across a velvet sofa, flipping through one of Nazarick's tomes with lazy curiosity.
The door slammed open.
"Lady Mammon!" Albedo's voice rang sharp as a blade. "I will only say this once—stay away from Lord Ainz! His magnificence belongs to me and me alone!"
Mammon looked up, unbothered, one golden eye gleaming. "Oh? You mean the tall, skeletal guy with the magnificent sense of interior design?"
Albedo froze at the casual tone. "Y-Yes, that Lord Ainz!"
Mammon tapped her chin. "Hmm… yeah, no. Not really my type."
That threw Albedo so hard she actually blinked. "Wh—pardon?"
Mammon smiled faintly, stretching like a cat. "Don't get me wrong, he's a total powerhouse, but I like my partners alive—you know, with pulses. Besides…"
She tilted her head, giving Albedo a sly grin. "If I had to pick someone here, I'd probably pick you."
There was a full two seconds of silence. Then:
"Wha—WHAAAAAAT?!"
Albedo's wings snapped wide, her cheeks flooding crimson. "You—wha—don't say things like that so suddenly! It's indecent!"
Mammon chuckled, golden tail flicking. "What? I'm Greed, darling. I see something beautiful, I want it. Doesn't mean I'll steal it."
Albedo stammered, torn between outrage and flustered preening. "S-s-stupid greed demon making me all scared of having another love rival when in reality it's Lord Ainz who will have to compete for me with you!"
Mammon's grin widened. "Now that's the spirit. Competition keeps things shiny."
Albedo was still sputtering, halfway between outrage and embarrassment, her wings twitching erratically. Mammon reclined comfortably, clearly enjoying every second.
"Oh come now, Albedo," Mammon teased, voice smooth as honey. "You should take it as a compliment. You're radiant when you're flustered—like a gem someone just polished."
"I—I am not flustered!" Albedo snapped, crossing her arms defensively—though her blush said otherwise.
That's when the door opened again.
"Pardon the intrusion, Lady Mammon," came Demiurge's composed voice. He stepped inside, smile polite, eyes gleaming behind his glasses. "Lord Ainz wished for me to ensure your accommodations were… satisfactory."
He froze mid-step, taking in the scene:
Albedo red-faced and fuming, Mammon lounging lazily with a mischievous smile, gold dust drifting in the air like glitter.
"...Ah." Demiurge adjusted his glasses, voice smooth but uncertain. "I see I may be interrupting… something."
Mammon didn't miss a beat. "Not at all! I was just telling your Overseer how stunning she looks when she's about to strangle someone."
Albedo hissed. "She—She's mocking me, Demiurge!"
Demiurge's grin twitched. "I… see. An admirable use of social leverage, Lady Mammon. Stirring emotional volatility to gauge response—truly devilish."
Mammon smirked wider. "Oh honey, I'm not gauging. I'm enjoying."
For once, even Demiurge hesitated. "...Ah. Genuine mischief, then. Delightful."
Albedo groaned, wings ruffling in irritation. "Why are you enjoying this too?!"
Demiurge simply smiled, bowing. "Because, my dear Overseer, studying the interaction of two apex demons of differing origins is… educational."
Mammon leaned forward, eyes gleaming gold. "Careful, smart guy. Keep staring too long, and you might fall in love too."
Demiurge blinked once, smile unfaltering—but his tail gave a single twitch.
"...Noted."