Chapter 1: Magic forest
The pavement disappeared.
One moment, Kalen was walking, the crunch of autumn leaves under his sneakers, the weight of his textbooks in his backpack. The next, there was a sickening lurch in his gut, a blinding white light, and a sensation of falling that stole his breath. He landed not on concrete, but on something soft, warm, and strangely damp.
He gasped, pushing himself up on trembling arms. The air was different. Thick, humid, and carrying a scent that was profoundly alien—a musky, sweet, salty odor that coated the back of his throat. It smelled of sweat, of something milky, and of sex. Unmistakably, overwhelmingly, of sex.
“What the—”
Processing complete. Host integration initiated.
A voice, smooth and devoid of gender, spoke directly into his skull. Kalen clutched his head.
Welcome, Kalen. You have been selected. This realm is Kyon, a world of apex masculinity, of propagation and potent flesh. You have been reconfigured to its fundamental biology.
“Configured? What does that—”
A wave of heat, sudden and intense, crashed through him. It centered in his groin, his chest, his backside. He looked down, his jeans feeling impossibly tight. With fumbling, frantic fingers, he undid his fly.
And stared.
Where his familiar anatomy had been was something… monumental. A thick column of flushed flesh, veins like cords, lay heavy against his thigh. It was obscenely large, impossibly so, a weight he couldn’t comprehend. He reached back, feeling his jeans strain over what was now a profoundly plump, heavy ass. His shirt was tight across his chest, which felt strangely full and sensitive.
Basic physical augmentation: complete. Special trait conferred: ‘Catalyst.’ Physical intimacy with you will gradually enhance your partners’ fertile attributes. Primary ability granted: ‘Degrade.’ You may, at will, break down foreign semen within your body, preventing or reversing impregnation.
“Impregnation?” Kalen choked out, the word absurd. He scrambled to his feet, his new center of gravity making him wobble. He was in some kind of cavern. The walls were smooth, organic-looking stone, glowing with a faint bioluminescence. The soft ground was moss. And the sounds… low moans, wet slaps, guttural cries, all echoing in the humid air.
Initial Objective: Adaptation. To synchronize with Kyon’s mana flows, you must be seeded. Allow penetration to completion.
“No. Hell no. Send me back!”
Compliance is not mandatory. Non-compliance leads to mana starvation and painful cellular dissolution. The choice is probabilistic. You have approximately forty-seven minutes.
The voice faded. Kalen stood alone, shivering in the warm cavern, his new body thrumming with an unfamiliar, demanding energy. Panic was a cold knot in his stomach, but underneath it, a traitorous heat was spreading. The pheromone-rich air was stirring his new physiology in ways he couldn’t control. He was hard, achingly so, a throbbing, ignored pulse between his legs.
“Okay, think. Just… think.”
He had to move. Staying here, hearing those sounds, was driving him mad. He picked a direction and walked, the swing of his heavy ass and the bounce of his full chest a constant, embarrassing reminder. His cock slapped against his belly with each step, already leaking a clear, sticky fluid.
The cavern opened into a larger chamber. Kalen stopped dead.
It was a den. Dozens of men, all with the same exaggerated, hyper-masculine builds, were everywhere. Some were on their hands and knees, massive, pillowy asses in the air as they were mounted from behind by partners with cocks as thick as Kalen’s arm. Others were on their backs, legs spread wide, utterly bloated pregnant bellies jiggling as they were relentlessly fucked. Milk streamed in continuous rivulets from swollen pecs, soaking the mossy floor. The air was a symphony of grunts, the rhythmic slap of skin on skin, and the squelching, pouring sounds of copious release.
Kalen felt dizzy. He’d never seen anything so bluntly, brazenly sexual. It should have been horrifying. Part of him was horrified. But another part, the part syncing with this new body, was mesmerized. His mouth went dry.
A figure nearby, bent over and gripping his ankles, turned his head. His eyes, glazed with pleasure, locked onto Kalen. He smiled, a lewd, welcoming grin. “Fresh meat,” he slurred, before his partner’s thrusts stole his voice.
Kalen stumbled backward, away from the direct view, pressing himself against a damp wall. He couldn’t. He just couldn’t.
A sound to his left. A soft, wet, sliding sound.
He turned.
It oozed from a crevice. A mound of translucent, shimmering gel, roughly the size of a large dog. It had no face, but the surface rippled, forming a pseudopod that quested toward him. It pulsed with a soft, internal light.
Entity identified: Amorphous Breeder – Common. A simple, instinct-driven creature. It seeks seed to catalyze its own replication cycle.
The slime slid forward, faster now. Kalen tried to run, but his body was uncoordinated, his feet slipping on the wet moss. He fell onto his back, his plump ass cushioning the impact, his massive cock slapping up against his abdomen.
The slime was on him in an instant. It was cool, not cold, and shockingly heavy. It flowed over his legs, pinning them. It enveloped his crotch.
“Get off! Fuck, get off!”
The sensation was immediate and electric. The slime wasn’t just touching him; it was stimulating him. Rippling, sucking pressure focused on his cockhead. Kalen cried out, his back arching. It was a suction far more expert, more intense, than any human mouth. Pleasure, raw and uncompromising, lanced up his spine. His hips bucked instinctively, driving his shaft deeper into the cool, clinging gel.
“Oh, god… no…”
But his body was saying yes. A loud, emphatic yes. The slime engulfed his entire length, its form tightening rhythmically, milking him with a relentless, inhuman pace. Kalen’s hands scrabbled at the moss, his head thrown back. He was going to come. Already. The objective flashed in his mind. Allow penetration to completion.
This wasn’t… it wasn’t the same. But the slime was penetrating him with this sensation, this overwhelming invasion of pleasure.
With a final, internal pulse, the slime did something new. A tendril, firmer than the rest, formed at its core. It pressed against Kalen’s hole, slippery with its own gel-like substance.
Kalen’s eyes flew wide. “Wait—”
It didn’t wait. It pushed. The pressure was immense, blunt, insistent. Kalen screamed, but it was choked off as the tendril breached him, sliding deep in one smooth, unyielding motion. It was inside him, filling him, stretching him in a way that bordered on pain but was instantly swallowed by a tsunami of heightened sensation. The dual assault—the sucking on his cock, the deep, internal pressure—shattered his last resistance.
He came. Violently. His body seized, his cock erupting in pulses that he could feel inside the slime. Jet after jet of thick cum was pumped directly into the creature’s core. The slime shimmered, glowing brighter, drinking it in.
And it gave back. As Kalen’s orgasm began to subside, the slime’s tendril pulsed within him. A flood of warm, thick fluid, different from his own, pumped into his depths. It was a claiming, a filling. His stomach, previously flat, began to distend. He could feel the volume expanding him, a swift, visible inflation. His belly rounded, then swelled, tight and full like a balloon.
The slime detached, sliding off him. It pulsated, growing slightly denser, then oozed away, its goal achieved.
Kalen lay there, panting, sprawled on the moss. His spent cock lay against his thigh. His chest heaved, and he felt a sudden, sharp ache in his pecs. A thin, white stream arched from each nipple, joining the milk-mist in the air. He was hyper-pregnant, his belly a firm, proud dome. And he was lactating.
Objective Complete. Mana sync established. Catalyzation observed. ‘Degrade’ ability is now available for conscious use. Shall I process the foreign seed?
Kalen looked down at his bloated stomach. He felt… full. Sated in a primal, profound way he’d never experienced. The panic was gone, replaced by a shaky, post-coital buzz and a dazed curiosity.
He placed a hand on his taut belly. He could feel the heat inside, the weight.
“No,” he whispered, his voice hoarse. “Leave it.”
Affirmative. Welcome to Kyon, Kalen.
The voice was silent. Around him, the den’s rhythmic, breeding clamor continued, unabated. He was part of the scenery now. He closed his eyes, letting the sensations wash over him—the ache of his used hole, the fullness in his gut, the steady drip from his chest. The beginning was terrifying, and degrading, and overwhelmingly intense.
And as a slow, involuntary smile touched his lips, he knew it was just the start.