Cover of Isekai sex

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Kalen gay versatile fit 20yr and a user in Animal Magic. Kalens isaekaid in a world where woman no longer exist and men have evolved to get hyper pregnant in return. Men can only get pregnant if there own or someone else's cum enters their belly through anal sex or Deepthroating a cock. The average hyper pregnancy in this world contains 20-300 babies on average per pregnancy. Men also have the ability to become impregnated whilst already being pregnant, they are twice as fertile during this time. All men have different proportions but their pecs, Asses, cocks, sperm production/ huge balls, virility, and fertility are extremely large. Cock sizes average 5-78inches in width and 2-70ft in height. Asses average 1-40ft in width and height, they are also very plump and all asses can take cocks regardless of how big they are without physical harm. Pecs Average 2-20ft minimum, pecs in this world produce milk at different speeds constantly pecs can fill to any size, all men constantly produce milk. Testicles/balls average any size but since men in this world produce cum constantly and consistently their balls can fill with sperm infinitely often causing increased horniness and the more full they are the faster they produce and fill with cum. Kalens pecs produce milk extremely fast and stretch infinite, his cock is humongous and thick, his ass is fat and plump with a very bottom heavy build. Polyamory is common and having 2-3 partners is seen as normal. Public sex is normalized and people have sex anywhere. Include kinks like Hyper cum inflation, Hyper mpreg, Hyper proportions, no birth scenes. Make Kalen meet a total of 3 guys who become his boyfriends. Make this slow burn. Make his boyfriends a dragon breed human (Huge cock, large pecs and milk production. Absolutely humongous ass and thighs. His milk consttly generates pecs can stretch 10 ft wide, excess milk starts storing in belly. Human with Dragon tail, horns, and dragon aspects) a large buff himbo elf (Extremely large ass and thighs, humongous cock, even large pecs and milk production. Buff talk Elf with short blond hair), A tsundere Wolf man breed(submissive slut, bottom heavy, huge pecs and cock. Man with wolf ears and tail. Wild features). Make this a story of how the 4 become boyfriends with Kalen, they are strangers in the beginning while Kalen adjust to this world. Make them all start off with no feelings towards each other.

Chapter 3: Trashed

The scent of the den—milk, sweat, sex—clung to Kalen’s skin like a second layer. It followed him through the dense, twisted trees as he moved with a new, grim purpose. Escape. The encounter with Grath had clarified things. This world would consume him, redefine him piece by piece, if he stayed in its heart. He needed wilderness, silence, a way home.

His body, however, was a traitorous companion. His balls swung heavy between his thighs, still partially laden with Grath’s contribution. His chest ached with a fresh let-down of milk that slicked his stomach as he walked. The forest air, cool and clean, did little to calm the low, persistent hum in his veins. He felt watched, not by eyes, but by the very atmosphere, as if the trees themselves were waiting for him to bend to their logic.

The sound of water led him to a wide, swift-moving river, cutting a silver path through the mossy stone. The sight was cleansing. He stumbled to the bank, dropping to his knees, and plunged his hands into the cold current. He scrubbed at his chest, the milk swirling away in cloudy ribbons. He drank, the water shocking his system.

Further downstream, a jagged disruption. A dark shape against the rocks. Kalen stood, water dripping from his chin, and moved closer.

It was a carriage, or what remained of one. Elaborate, now shattered, its wood splintered against a cluster of boulders. The symbol on the door—a stylized tree encircled by a crown—meant nothing to him. The scene meant everything.

Bodies. Eight of them in gleaming, now-bloodied armor, scattered like broken toys. Their injuries were not from the crash. Claw marks, deep and savage, rent the metal. Something had attacked them, then the carriage had gone over the embankment. Amongst the carnage lay other shapes—large, furry beasts with fangs and horns, also dead.

And in the center, partially pinned by a collapsed seat, was a figure in finer robes of silvery blue.

Kalen approached, his heart thudding. The man was an elf, pointed ears visible through disheveled, short blond hair. His face was pale, beautiful in a stark, sculpted way, even in unconsciousness. A nasty gash on his temple bled sluggishly. His chest rose and fell, but the breath was shallow.

“Hey,” Kalen said, his voice rough. He grabbed the seat and hauled, his new strength surprising him. The wood groaned and shifted. He pulled the elf free.

The elf prince—he had to be a prince—was massive. Not just tall, but built with a dense, warrior’s musculature that strained his silken clothes. His thighs were like tree trunks, his ass a phenomenal, rounded shelf. Even unconscious, his chest was impressive, the fabric damp at the nipples.

Kalen’s own nipples tingled in sympathy, a fresh drop of milk beading. He remembered the System’s passive notations about his milk’s properties. Nutrient-rich. Mildly restorative.

It was a stupid idea. But the elf was dying. The gash was bad, and one of his arms bent at a sickening angle.

“Don’t be fucking weird about it,” Kalen muttered to himself, to the unconscious elf, to the whole stupid world.

He positioned the elf’s head in his lap. With one hand, he pressed fingers against the wound, trying to staunch the bleed. With the other, he squeezed his own pec. A thick, warm stream of milk jetted out. He aimed it at the elf’s parted lips.

It pooled, then, with a weak swallow reflex, began to trickle down his throat. Kalen kept at it, massaging his own flesh, forcing out a steady flow. The sensation was intensely private, yet performed in this open grave. The milk wasn’t just sustenance; it carried a faint, golden shimmer, the barest trace of his unlocked Body Magic.

He fed the elf for what felt like an hour. The color began to return to the pale face. The bleeding at the temple slowed, then clotted over with a fresh, pink scab. The broken arm shifted with a wet crack, the bones knitting visibly beneath the skin.

The elf’s eyes flew open.

They were a vivid, clear blue, wide with confusion and pain. They focused on Kalen, on the stream of milk still connecting Kalen’s nipple to his mouth.

The elf didn’t jerk away. He swallowed, deliberately. Then his tongue darted out, licking a stray drop from his lip.

“You taste good,” the elf said, his voice a deep, surprisingly gentle rumble. He tried to sit up, wincing only slightly.

Kalen stopped the flow, his face heating. “You were hurt. It’s… it helps.”

“It did help!” The elf’s expression shifted to one of pure, uncomplicated delight. He grinned, a bright, sunny thing that seemed absurd amidst the wreckage. “I am Bjorn! Are you a forest spirit? A milk nymph?” He looked Kalen up and down, taking in the massive cock, the plump ass, the leaking chest. “A very generous nymph.”

“Kalen. And no. I’m just… lost.” He helped Bjorn to his feet. The elf prince stood a head taller, his body a monument of muscle. His own cock, sizable and half-hard, strained against his torn trousers. His chest was indeed massive, the nipples dark and wet.

Bjorn’s smile faded as he looked at his dead guards. “The bracken-wolves. They ambushed us. My protectors… they fought.” He blinked, his simple grief stark and real. Then he looked back at Kalen, the bright curiosity returning. “You saved me. With your… special milk. I must repay you.”

“You don’t have to—”

“It is principle!” Bjorn declared, his voice booming. “I am Prince Bjorn, son of the Oak Throne. And you…” He leaned in, sniffing the air near Kalen’s throat. “You smell powerful. Different. My body feels… warm. Tingly. Where you fed me.”

Kalen’s Catalyst effect. It was already working, just from the milk.

Bjorn’s hand, large and calloused, came up to cradle Kalen’s face. The gesture was oddly tender. “I am in need of an heir. The kingdom whispers. My seed is strong, but it has not taken root in any consort.” His thumb stroked Kalen’s cheek. “You are not a consort. You are a miracle. Your magic is in me now. I can feel it buzzing.”

He leaned closer, his breath warm. “Let me repay you. Let me seed you.”

It wasn’t a question. It was a joyful decree. Before Kalen could formulate a protest, Bjorn’s mouth was on his. The kiss was surprisingly soft, exploratory. Bjorn’s tongue pushed past his lips, tasting him, licking the residual milk from his mouth.

Kalen’s body responded instantly, overwhelmingly. His cock surged to its full, impossible height, slapping against Bjorn’s stomach. Milk sprayed from his chest, slicking both of them.

Bjorn broke the kiss, laughing, a sound of pure wonder. “Yes! See? Your body agrees!” He tore at the remains of his own trousers, freeing a thick, beautiful cock that curved upwards, already dripping precum. He was every inch the himbo prince: stunningly built, radiantly enthusiastic, single-minded.

He pushed Kalen back against a smooth, sun-warmed boulder near the riverbank. The cold stone contrasted with the heat of their skin. Bjorn’s hands went to Kalen’s hips, lifting him with ease, spreading his ass cheeks wide.

“I will be gentle at first, miracle-Kalen,” Bjorn promised, his eyes sincere. He rubbed the broad head of his cock through the cleft of Kalen’s ass, smearing precum over his loose, still-sensitive hole from Grath’s use.

“Just… do it,” Kalen breathed, his head falling back. Resistance was pointless. His body was screaming for it, the emptiness craving a new, royal filling.

Bjorn notched his cockhead and pushed.

He was thicker than Grath. The stretch was breathtaking, a glorious, burning ache that made Kalen see stars. Bjorn sheathed himself inch by inch, his eyes rolling back in pleasure.

“So good… so perfect and tight for me,” Bjorn chanted, his princely composure melting into a raw, needy groan. He bottomed out, his heavy balls pressing against Kalen’s ass.

Then he began to move. His thrusts were not the punishing piston of Grath, but a deep, rolling rhythm, each push grinding his pelvis against Kalen’s prostate with unerring accuracy. It was less an assault and more a relentless, joyful claiming.

“Take my seed, Kalen,” Bjorn moaned, his hands squeezing Kalen’s plump ass flesh. “Take your prince’s gift. Let it grow inside you. Give me my heir!”

The words, so blunt, so earnest, drove Kalen wild. He wrapped his legs around Bjorn’s waist, urging him deeper. His own cock, trapped between their bodies, leaked incessantly. The sensation was overwhelming—the full-body pleasure, the scandalous, public nature of it next to a river of death, the sheer absurd power of being chosen for this.

Bjorn’s rhythm began to falter. His thrusts became harder, deeper, more urgent. “I’m filling you! I can feel it… my balls are so full for you!”

With a roar that echoed off the water, Bjorn slammed home and erupted.

Kalen felt it like a floodgate opening. Jet after hot, heavy jet pumped into his core, a torrential volume that far exceeded Grath’s, far exceeded anything he’d imagined. Bjorn’s cock pulsed violently inside him, unendingly, as if his balls held reservoirs. Kalen’s stomach, already softly rounded from residual seed, began to swell in earnest, pushing outwards, tightening under the onslaught.

The pressure, the incredible fullness, tipped Kalen over the edge. His climax ripped through him, his own cock discharging in thick, roping spurts that painted both their chests white, mixing with the milk.

Bjorn finally stilled, spent, his forehead damp against Kalen’s shoulder. He was panting, grinning like a fool. He was still inside, softening slowly, a warm plug holding the immense deposit in place.

Kalen looked down. His stomach was distended, rounded and firm, looking several months along. It was a hyper-pregnancy, instant and profound.

Bjorn saw it too. He pulled out slowly, a gush of cum following. He knelt, reverent, and placed both hands on Kalen’s bloated belly. “My heir,” he whispered, awe-struck. “Growing so fast! The magic is strong in you!”

He looked up at Kalen, his blue eyes shining. “You must come to the palace. You will be treasured. You will want for nothing. I will feed you the finest fruits, and fuck you every day to keep you full.”

Kalen, dazed, sore, impossibly full, could only stare. The river babbled. The dead lay silent. And within him, a prince’s legacy rapidly divided and grew. The System flickered at the edge of his awareness, noting the exponential surge in Catalyst parameters for Subject Bjorn, and the solidification of a new quest line: Royal Bearing.

Escape was now a much more complicated dream.

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