The thunder outside seemed to laugh at me.
Erico was still impaled on my cock, her dripping, cum-filled pussy slowly grinding in lazy circles as she looked over her shoulder at Aiko Shimizu. Our class representative stood frozen like a statue, her glasses slightly fogged from the humidity and her own heavy breathing. Rain dripped from her soaked uniform onto the dusty concrete.
My mind was screaming to stop this, to pull out, to run. But the crimson mark on my neck pulsed with dark, liquid heat, turning every thought of resistance into thick, syrupy lust.
Erico's body was changing more openly now.
While she continued to slowly ride me, small, sickening ripples moved beneath the skin of her breasts. For a moment, something pressed outward — like tiny fingers or tentacles shifting just under the surface — before sinking back down. The veins around her crimson mark had turned a deeper black, spreading across her collarbone and down between her massive, heaving tits. A thin, pearly liquid leaked from her swollen nipples, sliding down the curves of her breasts and dripping onto my chest. It smelled sweet, almost intoxicating.
"Look at her, Ren…" Erico moaned, voice layered with that unnatural double-tone. "Poor Aiko can't stop staring at your cock stretching my pussy. She's soaking wet, isn't she?"
Aiko's face burned crimson. Her hands clenched at her sides, but her eyes remained locked on where my thick shaft disappeared again and again into Erico's overflowing cunt. Creamy white cum continued to leak out with every roll of Erico's hips, creating wet strings that connected us obscenely.
"I… I should go…" Aiko whispered, but her feet didn't move. Her thighs were pressed tightly together, and I could see her nipples poking obviously through her wet blouse.
Erico laughed — a sound that made the air feel heavier — and suddenly lifted herself off my cock with a wet pop. A thick flood of my semen poured out of her stretched hole, splattering onto my stomach and the floor. She stood up on shaky legs, her mutated breasts jiggling heavily, and walked toward Aiko completely naked from the waist up.
"Don't be shy, Class Rep," Erico purred, reaching out to gently touch Aiko's cheek. "You saw everything already. You saw how hard Ren came inside me. How much he loved it."
Aiko trembled but didn't pull away. Her eyes flicked down to my still rock-hard cock, glistening with our combined fluids.
The mark on my neck burned hotter. A strange whisper slithered through the back of my mind — not Erico's voice, but something vast, ancient, and patient.
More… Take more… Feed us…
I stood up slowly, pants still around my ankles, my cum-smeared cock throbbing in the cold air. Erico turned back to me with that too-wide smile, her second pair of eyes flickering open for half a second on her temples before vanishing.
"Come here, Ren," she commanded softly. "Bring that filthy cock over. Let Aiko see it up close."
Driven by the mark's burning need, I stepped forward. Aiko's breath hitched as I stopped right in front of her. My cock was still leaking, inches from her face. The scent of sex — heavy, musky, mixed with Erico's strange sweet fluid — filled the air between us.
Aiko's lips parted slightly. Her tongue unconsciously darted out to wet them.
Erico moved behind Aiko and gently pushed her forward until her soft cheek brushed against the side of my slick cock.
"Kiss it," Erico whispered into Aiko's ear. "Just once. No one has to know."
Aiko's eyes met mine for a brief, terrified moment. Then, slowly, shamefully, she turned her head and pressed her warm lips against the throbbing side of my shaft in a soft, hesitant kiss.
A spark jumped through the crimson mark.
Erico smiled wider, her teeth looking just a little too sharp in the dim flashlight glow.
"Good girl," she cooed. "Tonight is going to be very long for all of us."
The storm outside raged harder, as if the sky itself was watching.
Aiko's soft, trembling lips pressed against the side of my cum-slick cock sent a violent surge through the crimson mark on my neck. The ancient heat flared hotter, spreading down my spine like liquid fire and straight into my balls. My shaft twitched hard against her cheek, smearing more of the messy mixture of my cum and Erico's juices across her skin.
She didn't pull away.
Instead, her breath grew hotter and faster against my skin. Her glasses fogged up even more as she hesitantly kissed along my length again — shy, tentative little pecks that made my cock throb painfully.
Erico stood behind her, hands resting on Aiko's shoulders, that unnatural smile still stretching her lips too far.
"See? She wants it," Erico whispered, her voice echoing strangely again. "She's been watching you for months, Ren. The quiet, perfect class rep… always so proper. But right now her little pussy is dripping down her thighs."
Aiko whimpered in embarrassment but didn't deny it. Her tongue hesitantly slipped out, giving the underside of my cock a small, experimental lick. The warm, wet touch made me groan. Encouraged by my reaction — or perhaps by the same burning mark — she licked again, longer this time, tasting the filthy mix coating me.
Erico reached around and started unbuttoning Aiko's blouse from behind. The wet fabric peeled open, revealing Aiko's modest but perky breasts, nipples stiff from the cold and obvious arousal. They were smaller than Erico's but perfectly shaped, with cute pink tips begging for attention.
While Aiko continued shyly licking and kissing my cock, Erico cupped her breasts from behind and squeezed them firmly. Aiko moaned against my shaft, the vibration traveling through me.
I couldn't take it anymore.
Grabbing Aiko's ponytail gently but firmly, I guided my cock to her lips. She looked up at me with wide, nervous eyes for a second… then opened her mouth.
I pushed inside.
Her mouth was incredibly warm and tight. She had no experience — her teeth grazed me slightly at first — but the innocent clumsiness only made it hotter. I groaned as I slid deeper, feeling her tongue press awkwardly against the bottom of my shaft.
Erico laughed softly and pinched Aiko's nipples, making her moan loudly around my cock. The vibrations felt incredible.
"That's it… suck him properly," Erico purred, one of her hands sliding down Aiko's skirt and between her legs. Aiko's body jolted as Erico started rubbing her pussy through her soaked panties.
The changes in Erico were getting worse.
As she fingered Aiko, the skin on her breasts rippled visibly. A small, fleshy bulge moved beneath the surface near her left nipple before disappearing. Black veins pulsed around the crimson mark, and when she smiled, I saw her canine teeth had lengthened slightly, becoming sharper.
She caught me staring and leaned forward, pressing one of her leaking breasts against Aiko's cheek while my cock was still in the class rep's mouth.
"Taste her too," Erico told Aiko. "My milk is special tonight."
Aiko's eyes widened in fear and confusion, but the mark's influence was clearly affecting her. She turned her head slightly and hesitantly licked the pearly fluid leaking from Erico's swollen nipple. The moment she swallowed it, Aiko's whole body shuddered violently. Her pupils dilated, and for a split second, faint red lines appeared around her own neck — the beginning of a crimson mark forming.
The whisper in my head returned, louder this time.
Yes… More vessels… Feed the reflection…
I pulled my cock out of Aiko's mouth with a wet pop and pushed her down onto the dusty floor on all fours. Her skirt was flipped up, exposing her soaked white panties. I yanked them down roughly, revealing her tight, dripping virgin pussy.
Erico knelt beside us, spreading Aiko's ass cheeks for me.
"Take her, Ren," she breathed, voice layered with alien hunger. "Break her. Make her yours."
My cock pressed against Aiko's entrance. She whimpered, shaking.
"I… I've never…" she whispered.
Neither had I — until tonight.
I thrust forward.
Her tight virgin pussy resisted for a moment, then stretched around my thick cock as I sank into her. Aiko cried out in pain and pleasure, her walls clamping down hard. The sensation was mind-melting — even tighter than Erico had been.
I started fucking her. Slowly at first, then deeper and harder, the wet sounds of her pussy echoing across the open floor. Erico leaned down and kissed me sloppily, her too-long tongue invading my mouth while I pounded our class rep from behind.
Aiko's moans grew louder, turning into desperate cries as pleasure overtook the pain. Her modest breasts swayed beneath her with every thrust.
The storm outside howled like a living thing.
And somewhere in the back of my mind, I felt something ancient watching us through the glowing crimson marks — something that grew stronger with every thrust, every moan, every drop of pleasure we fed it.
Aiko's virgin pussy was impossibly tight.
Every thrust forced a broken, high-pitched moan out of her as her slick walls clenched and fluttered around my cock. I gripped her narrow waist tightly, pulling her back onto me harder, watching in twisted fascination as her modest ass rippled with every impact. Wet, filthy squelching sounds filled the open fifth floor every time I buried myself to the hilt.
"Ahh—! Ren… it's too deep…!" Aiko cried, her voice trembling, glasses askew on her face. Her fingers scraped against the dusty concrete as I fucked her from behind.
Erico knelt beside us, one hand stroking Aiko's back while the other played with her own swollen, leaking breasts. The changes in her body had become even more grotesque. The skin around her massive tits had taken on a faint, unnatural sheen, almost iridescent. When she squeezed one breast, a thick stream of pearly fluid sprayed out, some of it landing on Aiko's back.
"Drink it," Erico commanded softly, pushing her leaking nipple toward Aiko's mouth.
Aiko, lost in a haze of pain and pleasure, obeyed. She turned her head and latched onto Erico's nipple, sucking greedily. The moment she swallowed, her body jerked violently. A fresh wave of hot juices gushed around my cock as her pussy spasmed.
The crimson lines around Aiko's neck were becoming clearer now — thin, glowing veins spreading outward like roots seeking soil.
I couldn't stop. The mark on my neck burned with savage intensity, forcing my hips to move faster, slamming into Aiko's tight cunt with wet, brutal slaps. Her modest breasts swayed beneath her, nipples scraping against the rough floor.
Erico pulled her breast away from Aiko's mouth with a wet pop and suddenly straddled Aiko's back, facing me. She grabbed my head and pulled me into a messy, violent kiss. Her tongue had grown longer — it wrapped around mine like a living thing, thick and hot, forcing its way down my throat.
When she pulled back, a second pair of eyes had opened fully on her temples. They were completely black, reflecting nothing. They stared at me while her original eyes rolled back in pleasure.
"You're feeding it so well…" the layered voice whispered from Erico's mouth. "Your purity… it tastes delicious."
Aiko's pussy suddenly tightened brutally around me. She screamed in orgasm, her entire body shaking as she squirted hard around my cock, clear fluid spraying down her thighs and onto the concrete. The violent contractions pushed me over the edge.
I buried myself as deep as possible and came.
Thick, heavy ropes of cum erupted inside her, flooding her womb. I kept thrusting through it, pumping load after load until it overflowed, mixing with her juices and dripping messily down her legs. The pleasure was so intense it bordered on pain, the mark feeding on every drop of ecstasy.
For a moment, everything went silent except for the roaring storm.
Then reality fractured.
For one terrifying second, the open concrete floor around us stretched infinitely in every direction. Countless eyes — thousands of them — blinked open in the shadows between pillars, watching us. A low, incomprehensible whisper echoed directly inside my skull, a sound that felt like galaxies collapsing.
Then it snapped back to normal.
Erico climbed off Aiko and collapsed beside her, breathing heavily. Black veins pulsed visibly across her breasts and stomach. When she smiled, her mouth had too many teeth.
Aiko lay trembling on the floor, cum leaking steadily from her freshly fucked pussy. The beginning of her own crimson mark now glowed faintly on her neck.
I pulled my cock out with a wet sound and sat back against the pillar, chest heaving. My mind was spinning. Shame, horror, and an unbearable craving warred inside me.
Erico crawled over and rested her head on my thigh, lazily licking the mess off my softening cock.
"We can't stay here all night," she murmured, voice still distorted. "Let's take her home. My parents are away… but Aiko's house is closer. Her room is soundproofed. We can keep going until morning."
Aiko weakly lifted her head, glasses crooked, face flushed with shame and lingering lust.
"I… I can't believe I…" she whispered, but her eyes kept drifting back to my cock.
The whisper in my head returned, quieter but insistent:
More. Bind them deeper.
The rain showed no sign of stopping.
The storm showed no signs of mercy.
Rain hammered sideways across the open fifth floor as the three of us slowly gathered our soaked, ruined uniforms. My body felt heavy, drained, yet the crimson mark on my neck kept pulsing with restless hunger, refusing to let me go soft. My cock was still half-hard, slick with cum and the girls' juices, twitching every time the mark flared.
Erico stood up first. Her body had become visibly wrong.
Her breasts were now noticeably larger, swollen and heavy, veins throbbing darkly beneath the skin. The leaking fluid from her nipples had thickened into a glossy, almost milky substance that smelled sickly sweet. When she moved, faint ridges shifted under the skin of her abdomen, as if something was slowly uncoiling inside her. The extra pair of eyes on her temples stayed open for several seconds this time — pitch black and unblinking — before slowly sinking back into her flesh with a wet, organic sound.
Aiko looked even worse off.
She sat on the cold floor, legs spread slightly, thick white cum still oozing from her freshly fucked pussy. The crimson mark on her neck had grown more defined, thin red tendrils now stretching toward her collarbone. Her eyes were glassy, lost between shame and unnatural lust.
"We… we can't go home like this," Aiko whispered hoarsely, trying and failing to cover her leaking breasts and creampied cunt with her torn blouse.
Erico smiled with her too-wide mouth. "My house is too far. Yours is only fifteen minutes away, Class Rep. And you told me before that your parents are out of town tonight."
Aiko's face burned with humiliation, but she didn't argue.
We dressed in silence — or what remained of our uniforms. The wet fabric clung obscenely to our bodies. Erico didn't even bother fully buttoning her blouse, letting her swollen, leaking tits stay mostly exposed. She took my hand on one side and Aiko's on the other, pulling us toward the stairs like a proud owner.
The walk through the storm was a feverish blur.
Cold rain soaked us again as we hurried through dark back streets. Every few minutes, Erico would push me against a wall and kiss me violently, or slide her hand into Aiko's skirt to finger her leaking pussy while we walked. Aiko's soft, ashamed moans mixed with the sound of rain. By the time we reached Aiko's quiet suburban house, all three of us were trembling with renewed lust and something far darker.
The moment the front door closed behind us, Erico shoved Aiko against the wall and kissed her deeply, their tongues sliding messily together. I watched as Erico's elongated tongue pushed visibly down Aiko's throat, making her gag and squirm.
Then they both turned to me.
"Bedroom," Erico growled, her voice no longer fully human. "Now."
The next hours became a blur of flesh, fluids, and growing horror.
We fucked on Aiko's bed until the sheets were ruined. I took turns pounding both of them in every position they demanded. Erico rode my face while I thrust into Aiko missionary, then switched so I was fucking Erico doggystyle while she ate Aiko's cum-filled pussy. Their bodies changed more openly in the privacy of the bedroom. Erico's extra eyes kept appearing. Her tongue grew longer. At one point, while I was buried deep inside her, something thin and wet brushed against the head of my cock from inside her womb.
Aiko's mark spread faster. By 3 AM, faint red patterns had appeared around her breasts and inner thighs. She cried when she first noticed them, but kept begging me to cum inside her again anyway.
The whispers in my head never stopped.
Deeper. Break them. Bind their souls to the reflection.
At some point near dawn, as I was filling Aiko's pussy with yet another load while Erico sucked on her swollen clit, I glanced at the mirror on Aiko's closet door.
For one heartbeat, my reflection wasn't me.
It was something tall, pale, and impossibly thin, with too many joints and a mouth that opened vertically. It smiled at me.
Then it was gone.
Exhaustion finally took us as the first light of morning crept through the curtains. The three of us lay tangled together — naked, sticky, marked, and changed.
But as my eyes grew heavy, one final thought pierced through the haze:
School started in a few hours.
And I had no idea what monsters would be walking beside me through the gates.