Possession Transformation University Club Junior Nishizumi Kana Part 1 (Patreon)

The first light of dawn crept through the window, tickling my eyelids. My body felt as heavy as lead from the late night before. As I got ready for university, I checked the clock—still plenty of time.

Then, a noise in the hallway. The faint sound of a door opening, and—

"Good morning, Senpai."

At the exact moment I reached for the sliding door, she appeared on the other side—Nishizumi Kana, dressed in casual workout clothes, her collared white shirt slightly loose, collarbone peeking through. Had she been exercising? Her cheeks were flushed.

Her hand grasped mine—her palm was burning.

"Let's spend the day together. You don't have to go to class, right?"

This had been happening for three weeks now. Ever since that experiment. Even after the possession ended, it was like something had overwritten her mind. She clung to me now with an intensity that was never part of the real Kana.

"Can’t, Kana. We skipped yesterday already."

"But I want you, Senpai."

Her fingers toyed with the edge of my sleeve. The way she smiled up at me—narrowed eyes, a faint, knowing curl of her lips—held none of the nervous politeness Kana once had.

The fridge, when I opened it, was already stocked with an assembled sandwich. Her doing. Lately, she'd been slipping into my apartment uninvited. I definitely never gave her a key.

"Senpaaai, is the food I make good?"

"Yeah. Thanks."

At my answer, she swayed happily—like a praised puppy. The real Kana would’ve kept her distance, maintained that careful kouhai-senpai boundary. Not… whatever this was.

As I tied my shoes at the entrance, arms wrapped around my waist from behind. Her warmth pressed against my back.

"Even though I told you not to go… You’re mean, Senpai."

Her breath tickled my neck—words dripping with a clingy, lover’s tone. But this wasn’t love. It was just the aftermath of an experiment gone wrong. That’s what I told myself.

"…I'll see you later."

When I finally pulled free and opened the door, I caught Kana’s dejected face in the corner of my vision.

She’d be waiting for me when I got back.

Warm. Sweet. Obsessed.

How long would this broken relationship last?

The evening air was thick with weariness as I walked home, my thoughts a tangled mess. Just one year ago, if someone had told me that "soul possession" was real, I would have laughed in their face. Now here I was, grappling with an impossible truth that had upended my world.

My university lectures might as well have been in another language - I hadn't retained a single word. While other students diligently took notes, I sat numbly staring at dust particles dancing in the sunbeams, my fingers absently intertwined on the desk. Everyone else seemed so normal, so untouched by what I now knew to be possible. Meanwhile, I was stumbling through each day carrying impossible knowledge that made ordinary life feel alien.

Soul-splitting possession - a technique where you cleave off a fragment of your own soul to take control of another body.

The rules used to be clear:

First, the possessed forgot everything afterward, like waking from dreamless sleep. Kana had no memory of that first experiment in her apartment.

Second, when the connection severed, everything returned to normal. That was supposed to make it undetectable. That was why I thought there would be no consequences.

But Kana…Kana defied everything I understood.

She was supposed to go back to being her usual self - conscientious, polite, maintaining the proper respectful distance a junior should from their senior. Instead…

Instead she was sneaking into my apartment at dawn, cooking meals I never asked for, pressing her heated breath against my neck while whispering "Stay with me."

What went wrong?

Had part of my soul residue lingered in hers, warping who she was?

Or was the unspeakable simpler explanation true - had she actually developed feelings for me? (The thought made my skin crawl. And yet, wasn't it laughably mundane?)

For now, I had no answers. But one thing was clear beyond doubt - this power couldn't be shared. Ever.

The chime signaling class's end jolted me from my thoughts. Around me, students were already gathering their things. Belatedly, I closed my textbook and stood, ignoring the accumulating messages glowing on my silenced phone.

[Kana: Senpai! Where are you today? :( ]

[Kana: I made your favorite curry~♡]

A bitter taste rose in my throat. No. Not today. Not when our proper senior-junior relationship had been shattered, leaving behind only this awkward, painful intimacy that could never be explained or undone.

The convenience store was brightly lit but felt hollow as I grabbed a prepackaged meal, the fluorescent lights buzzing ominously. Trudging up the apartment stairs, I couldn't help but think with mounting irritation, Kana's probably waiting inside again…

The moment I turned the doorknob, the thick scent of something sweet assaulted my senses. The apartment was dark, save for the dim glow of streetlights peeking through the curtains—illuminating nothing but Kana's silhouette, already standing in the entryway.

"Welcome home, Senpai…♡"

Her voice was a tremulous whisper, and before I could even step inside, her body was pressing against mine, molding itself to me like a second skin. The strands of hair escaping her hood tickled my neck, unsettlingly warm. Damn it, not again. Before I could even process my frustration, her fingers—shaking, feverish—were already clutching at the hem of my shirt.

"I-it's been so long…"

Her whisper was breathless, her voice barely above a murmur, as if she was fighting to stifle something unbearable. A glance into the apartment revealed takeout containers neatly stacked on the table and my laundry folded in a pile. Like always. Like normal. Like I had come back to a wife instead of the underclassman I barely even spoke to before all this.

"You cleaned up again?"

"Y-yes! While you were gone… I took care of everything for you…"

The words tumbled out in an excited rush, and then, embarrassingly—uncontrollably—her entire body trembled, knees jittering as if she wanted to jump into my arms but was restraining herself. She didn’t even hide it. She was vibrating with anticipation just from me walking through the door.

I exhaled, shutting the door behind me. Kana stiffened, inspecting her own palm with sudden self-awareness. "A-ah…" She let out a tiny, shaky noise. Sweat. She was sweating.

The realization made my stomach turn.

Seeing my expression, she hurriedly wiped her palm on her hoodie, embarrassed—as if that was the problem here. No, dumbass, the problem is you standing in my goddamn apartment like some lovesick ghost I can't exorcise.

Words formed. Then dissolved. There was no point.

"Let's just… go inside."

"Okay! ♪"

Instantly bright, she gave a small bow before latching onto my sleeve, gently pulling me toward the living room. Every tiny step she took was unsteady, her shoulders twitching with barely restrained energy.

I dropped my bag and began toeing off my shoes, watching from my periphery as she braced herself against the wall, her entire body trembling. The way her arm peeked out from her sleeve, fingers spasming slightly—she couldn’t even contain her own excitement.

(Is she seriously getting off on me just… coming home?)

It was terrifying. Wrong. The real Kana would’ve never slipped into my room like this. Never acted so shamelessly. Never ruined everything like this.

"…Shouldn't you be at your own place?"

"Don’t wanna."

A blunt response, delivered with zero resistance—just the soft lilt of a girl completely wrapped up in her own delusions. She absently curled a finger against my sleeve as if memorizing the fabric.

"I just… wanted to be somewhere that smells like you."

Her voice was mumbling, yet her eyes gleamed—so painfully obvious in her joy. She was intoxicated just by my existence, her rationality obliterated.

(This isn't just possession aftermath anymore. This is something else.)

I took a step into the living room, deliberately putting distance between us as I hung my coat—but her footsteps followed. One step behind, always, like a living shadow.

"…Hey. Kana. Seriously. Are you okay?"

"Hm? What do you mean?"

"I mean this." I gestured between us. "This isn’t normal."

"But I love you, Senpai."

Instant. No hesitation. No downward glance, no stammer—just stated as fact, like she was proud of it.

………Fuck.

A beat of silence.

Then, slowly, Kana began moving toward me—shivering, her fingers clutching at her hoodie so tightly her knuckles turned white.

"I missed you."

Her whisper was feverish.

"I thought of you during class. While eating. Every second."

Her voice was laced with sweetness and feverish desperation. Kana's long lashes fluttered as she gazed up at me, cheeks flushed crimson with unmistakable arousal. The faint trembling of her parted lips sent alarm bells ringing through my skull.

This has gone way too far.

I instinctively stepped back until my shoulder blades hit the cool wall. "H-hey, calm down Kana. This isn't something to take lightly."

"But…"

She advanced another step, breath ragged, delicate shoulders rising and falling rapidly. "I love you too much, Senpai… I can't help it anymore. These feelings… I can't suppress them…" Her hands shot out suddenly, fingers stretching toward me. I barely managed to twist away at the last second.

(Damn it, this is bad…)

(But honestly… part of me is… happy?)

The conflicting emotions tore at me. Sure, I'd always thought Kana was cute - definitely my type. But that was the normal version of her. This was… something warped. Something clearly distorted.

"Senpai…"

Her voice dropped to a pleading whisper, equal parts timid and scorching with passion. "Could you… learn to love me just a little? Hold me… please?"

My mouth went bone dry. Heat spread across my face despite myself. Though rationality screamed no, absolutely not, my body was betraying me. Her raw desperation was eroding my resistance.

"…Kana."

I forced the words through gritted teeth. "Are you… really okay with this? You don't remember what I did. This kind of relationship…"

"I am!"

Her response came instant, eyes blazing with unsettling clarity as they locked onto mine. "I love you. I don't need reasons…" She glanced down momentarily, gathering courage before meeting my gaze again. "I don't remember what you did. But even without memories… this feeling is absolutely real."

Her fingers clenched white-knuckled around her hoodie sleeve.

"When I woke up, my chest burned… all I could think about was you. I don't know why. But this emotion is real - I can say that with certainty." The faint shine of moisture gathered at her eyelashes - her yearning gaze seemed frighteningly genuine.

"And…" Her expression softened slightly, "…Senpai… you don't exactly dislike me either, right? You make this face… like you're just a little happy when I come over."

The sheer directness of her words nearly buckled my knees.

(This is… dangerous. But…)

(If it's just a little… reeeeeally just a little…)

I wanted to clutch my head in frustration. No. This is absolutely wrong. Yet Kana's scorching stare continued melting my resolve drop by excruciating drop…

Kana suddenly flashed a mischievous grin before gripping the hem of my shirt with both hands.

"……Do it to me again."

Her cold fingers pressed against my abdomen. Without blinking, her deep, unflinching eyes reminded me of the ocean at night—dark and ominously bottomless as if concealing countless things beneath.

"You remember….the good parts?"

Not waiting for my response, she let her fingers trail up as she whispered, "When you entered me…my head tightened…"

"…Kana."

Trapped against the wall, I had nowhere to go. Gently, yet deliberately, she continued in that coaxing voice.

"At first, I was scared….But then I realized…I want you to control all of me."

A shiver ran down my spine. This was no longer about simple love or affection anymore.

Her face was calm, wearing a sickly sweet smile. Her faintly blushing cheeks and trembling lashes all seemed so genuine, so happy—but her eyes were unmistakably waiting in anticipation for my next move.

"Come on, hurry…"

She extended her arm slowly, and her cold fingers brushed against my neck.

"……Won't you go inside me? Take everything from me?"

No matter how anyone looked at it, this wasn't just some lovey-dovey couple's conversation.

My jaw tightened. Kana… was enjoying this. She took pure delight in being dominated.

As she leaned in close, her face tilted for a kiss, I finally understood—standing there by her ear.

That time I thought I released her… I must not have withdrawn everything completely.

And horrifyingly enough…

…She wanted this.

(This is the first time she’s started doing this on her own…)

Stiffly, I reached out toward Kana. The moment my hand touched her shoulder, I could feel the shiver running through her body under my fingers.

"A-ah…!"

Kana's eyes widened abruptly. Usually a dull brown, they now burned with an eerie light. Her lips trembled, and a tiny whimper leaked through her teeth.

"T-that's… weird… my head is…!"

Her body suddenly stiffened. Her arms dropped limply as her head jerked back unnaturally, like a puppet recoiling against its strings. Her muscles all slackened at once—then—

"Ugh—Hn…nnGhhhk—!"

A bubbling, guttural noise tore from her throat. Her pupils shook violently, losing focus. Drool spilled from the corner of her lips, streaking down her chin.

"Cuh—… th-this is…"

I could feel my soul surging through every inch of Kana's body. The inside of her was startlingly warm, soft, welcoming. The sensation of slowly sinking into another sheath of warmth.

Kana's knees wobbled violently. Her whole body twitched, her thigh muscles spasming enough to be seen even through her panties.

"Haahh—! NGH!"

Her back suddenly arched sharply. Her chest heaved, collarbones casting deep shadows. Beads of sweat dripped down her thighs, soaking into the fabric before staining the floor beneath.

And the most unsettling part?

She was smiling.

"…Hih… haa… hm♪"

Between spasms, her lips curled into an unmistakable grin. Half-lidded and teary-eyed, she was trembling with delight.

The final mental barrier shattered. I could feel Kana’s consciousness being swept away like foam in a torrent—

Almost there…

Almost—

Completely mine.

The moment the last fragment of my soul flowed into her, Kana's body gave a small, mechanical twitch—click.

Her limbs stiffened. Fingers slackened. Dark hair fanned out like feathers as her empty eyes stared blankly into nothing. Lips slightly parted, a string of drool connecting them—she was nothing but a living doll now.

"…Kana."

At my voice, only her neck tilted—kunk—an obedient tilt. A hollow vessel. I could still feel my will seeping through her, hot and undeniable, like ink saturating paper.

(This easily…?)

I pressed a single finger to her forehead. Like an automaton, Kana slowly knelt. Awkwardly, but precisely.

"Stand up."

Half a second of delay—then compliance. She rose on unsteady legs, the shape of her breasts pressing sharply against her shirt with the movement.

(She… wanted this.)

My throat tightened—no, burned. I never imagined she'd crave this kind of submission. Running a finger along her neck earned me a trembling exhale.

"Can I touch you?"

No response. Just empty eyes tracking me. Permission was irrelevant now—domination was absolute.

(…So this is what it means to truly own someone.)

As I adjusted myself, a quiet realization settled in. There was no need for caution anymore. She wasn’t a trap. Wasn’t a trick.

She was simply mine. A gift.

My fingers pressed deeper, stirring the depths of Kana's soul like thick syrup. Layer by layer, I dredged up her subconscious—the real Kana I'd deliberately left dormant—pulling her slowly to the surface.

Her eyelids began to flutter like moth wings.

"Mnn…ah…?"

The haze in her eyes dissipated bit by bit, light returning to her dilated pupils. The moment her gaze focused—the moment she recognized me—

"…HAAaahhh♥"

A full-body spasm wracked her frame as her face twisted in pure ecstasy. Her thighs trembled, threatening to spill from the hem of her shorts, her T-shirt clinging to her skin with sweat.

"Aha… ahaha…♥ Se—Senpai… you… you did it again—♪"

Her tone was playful, teasing—just like usual. But her voice shook, sticky with honeyed arousal. Biting her lip did nothing to suppress her grin; she clutched her own cheeks, rocking back and forth on unsteady legs.

"Noooo, it's so bad… I- I love this feeling…♥"

She hugged her own arms tightly, fingers plucking at her damp sleeves. Beneath the black fabric, the stiff peaks of her nipples were painfully visible.

"…Look at me, Senpai… look how messed up I am… This is all your fault…♥"

Deliberately, she hunched over—peering up at me with a dazed, drunken gaze, her eyes utterly melted.

"Aah~… W-well? What do we do now? My brain’s all… Senpai-flavored now…♥"

She swayed, tilting her head in an exaggerated show of artificial innocence—still Kana, but the foundation of her emotions was warped beyond recognition.

"Haah… ah, god, I'm so stupid… Even when I know you’ve possessed me… I just get so… happy~…♪"

Her black T-shirt clung to her heaving chest with sweat, her breath coming in erratic gasps. The soft shhhk-shhhk of her thighs rubbing together under those shorts. She was dripping, and she didn’t even try to hide it.

"Hey, Senpai… I think I'm getting emotional… Might cry a little… okay…?♥"

Her eyes glistened, even as her tongue peeked out in a childish tease—like a love-struck girl overwhelmed by pure bliss.

Except.

Her bliss was poison.

And she loved it.

The moment I released control, Kana's body shifted like a feather settling.

"…Mmm~"

She studied her open palm for a beat—then tightened it abruptly, lips quirking in a smirk. Slowly, fluidly, she twisted her body around with the lazy grace of something swimming underwater.

Head tilted. Shoulders raised. Fingers hooked in the pockets of her shorts as she lowered herself in slow motion—knees bending, hips arching back until her posture was unmistakably…

(…Are you serious right now?)

I swallowed thickly. Kana refused to look at me. Just stared dead ahead while her hips swayed side to side in torturous rhythm. The hem of her black T-shirt rode up just enough to reveal that sliver of bare skin above her waistband.

"Hnn~… I'm so tired somehow~…"

An exaggerated stretch. Arms high—fabric lifting further—exposing the delicate dip of her navel. The arch of her back deepened, shoulder blades pulling taut under her shirt. No… not just pulling. Flexing. She was doing it on purpose.

"…Senpai, what'cha lookin' at~?"

The face she turned to me was innocence incarnate. Eyes softened, lips pursed in an exaggerated pout—while her hips never stopped moving.

(This little—!)

My cheeks burned. She knew. Every damn second of this was calculated. She might as well have set a goddamn table, laid herself out as the main course, and gone "Bon appétit."

"C'mon, sit down already~ It's nice and comfy right here."

She patted the floor beside her—firmly. Normally, she'd be the one closing distance, offering every part of herself shamelessly.

(So this is the game now?)

Pulling away just to drag me closer. Taming me while pretending to submit. Even fresh off being literally possessed—she was already flipping the script.

I let myself stare at the view: legs dangling, the hem of her shorts fluttering dangerously with every idle swing of her ankles.

But the real treachery?

"…Hm?"

When she glanced back, her eyes were waiting.

She'd never say what for. Not in a million years. But that gaze screamed "Hurry up and figure it out."

(—Goddamn it.)

I realized too late—I was already leaning forward, body moving without permission, hopelessly reeled in—