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Reincarnated As A Dungeon Core; Now I'll Build My Monster Girl Harem!

LeoDGreed
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Synopsis
Leo was a 24-year-old virgin gamer—obsessed with hentai dungeon builders, endless grind sessions, and monster girl waifus he could only dream of touching. One fateful night, Truck-kun finally grants his ultimate fantasy... by smashing him into oblivion. He awakens not in heaven, but as a glowing Dungeon Core in Elyria—a brutal, post-apocalyptic fantasy world ravaged by ancient gods and crawling with desperate adventurers. No body, no hands... until he discovers his unique power: summoning an army of insatiable monster girls—succubi with dripping wet tails, jiggling slime girls begging to envelop his cock, dark elf slaves in heat, lamias with coiling tentacles, and more—who evolve only through thick, hot "mana injections" straight from their Master's throbbing shaft. Virgin no more, Leo manifests a perfect avatar body built for endless breeding. Every deep thrust, every overflowing creampie, every public orgy in his expanding dungeon floods him with power. He levels up by fucking his loyal harem senseless—tentacle gangbangs in breeding chambers, slime bukkake rituals, succubi riding him while draining captured adventurers dry. Soon, brave (and stunningly busty) female adventurers flood his traps, only to end up stripped naked, minds broken, pussies addicted—converted into eager new monster girl wives begging to be bred again and again. From a weak core in a forgotten cave, Leo builds a vast underground empire of endless ecstasy: floors dedicated to non-stop orgies, nurseries swelling with his half-monster offspring, and throne rooms where his harem worships his cock in massive, moaning group rituals. In this world beyond the timescape, power isn't taken—it's pumped, thrust, and flooded into willing, writhing bodies. One virgin gamer. Infinite horny monster girls. Zero mercy. Get ready to plunge deep into the ultimate uncensored isekai harem fantasy—where every level-up ends in explosive, womb-filling climax. --- Support this story by adding it to your collection, giving Power Stones, and Golden Tickets! For private discussion, reach out on Discord: https://discord.gg/2zz2Csj9UQ ---
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Chapter 1 - Awakening As The Core: Reincarnation!

Endless darkness surrounded Leo. He felt no pain from the truck's impact. He saw no blinding light from some heavenly gate.

Leo's consciousness sank depper into the void, waitless, bodiless, like he was being cradled by warm water.

For the first time in years, he felt calm, really calm.

No greasy keyboard under his palm, no smell of stale noddles clogging his room, no pain in his dick from overfapping to 2d monster girl. And most importantly, not an ounce of loneliness gawning at his chest.

He reminisced, flashes of his old life flickering by like the closing of old hentai tabs, one by one.

The car crash that took his parents. Endless night grinding shooters, as he carried noobs who laughed at his usrname. The smell of stale noddles, the piled up tissues on his floor, that one date in High School, where she laughed when he mentioned his waifu collection. Mia's teasing smile at the store, her massive tits straining her uniform, nipples poking through.

A small smile tugged at his disembodied mind. *If this is dead... It's not so bad... Atleast the suffering is over.*

But then, a pulse. Warm. Inviting. A glowing blue crystal appeared in the darkness, hovering at the center of his awareness. It throbbed like a heartbeat, pulling him in.

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[DUNGEON CORE SYSTEM ACTIVATED]

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[WELCOME,

HOST LEO LIONEL, YOU HAVE BEEN REINCARNATED AS A LEVEL 1 DUNGEON CORE IN THE WORLD OF ELYRIA. A BRUTAL REALM FILLED WITH MONSTERS, ADVENTURERS, AND ACCIENT RUINS. DUNGEON LIKE YOU ARE PLAYTHING FOR MOST ADVENTURER.]

[YOUR UNIQUE TRAIT: MONSTER GIRL HAREM SUMMONING - ALL MINIONS MANIFEST AS VOLUPTUOUS, NAKED FEMALE MONSTERS WITH INSATIABLE LOST FOR THEIR MASTER. THEY GROW STRONGER THROUGH DIRECT 'MANA INJECTION' - YOUR SED FLOODING THEIR WOMBS, MOUTH, AND HOLES]

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Leo's mind exploded. *What the fuck? Monster girl harem? Fucking? Breeding to level up? This is... This is exactly like those hentai dungeon games and hentai I jerked off to! Holy shit, am I dreaming? No, Truck-Kun saved me!*

A translucent interface shimmered into view.

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Dungeon Status

Dungeon Name: (Not Yet)

Core HP: 100/100

Mana: 10/100 (Critically Low)

 Floors: 1 (Dim Basic Floor)

Minions: 0

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Leo's field of view expanded. He can see now. He is in a small damp, cave chamber. His core floated in the centre, suspended by faint magical thread. 

Salactites dripped water slowly. The walls was filled with glowing moss, giving faint light. Ambient mana trickled in from air, but very less.

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[WARNING: MANA CRITICALLY LOW. TO SURVIVE AND EXPAND, ABSORD MANA IMMEDIATELY.]

OPTIONS: PASSIVE ABSORPTION FROM SURROUNDING (SLOW), OR ABSORB FROM INTRUDERS (NONE DETECTED), OR GENERATE VIA SEX (NO MINION)

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Leo focused, his thoughts was racing, "System? You're real? This isn't some coma hallucination?"

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[AFFIRMATIVE, MASTER LEO. THIS IS YOUR NEW REALITY. ASK AWAY. BUT MANA IS PRIORITY.]

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"So..." He asked, "How do I absorb mana? From the air? Moss? What?"

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[FOCUS YOUR CORE ON AMBIENT MANA PARTICLES IN THE CAVE. PULL THEM INTO YOUR CORE.]

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Leo started concentrating. The faint blue light around his crystal intensified. Ambient mana from the air, sipping in.

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[+5... +3... REGENERATING MANA.]

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"Damn, that's slow." Leo growled.

It was slow as fuck, but it worked. After what felt like hours, his mana crept up to to 50.

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[FIRST SUMMON AVAILABLE: BASIC SUCCUBUS]

[COST: 30 MANA.]

[HIGHLY RECOMMENDED FOR RAPID MANA GENERATION AND LEVELLING UP.] 

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END OF CHAPTER : 1 : AWAKENING AS THE CORE: REINCARNATION!

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