[First Story] The Hikikomori Me and My Perfect Stepsister - Parasite Play, First Ejaculation!
A strange sensation of my body floating in a field of pure white vision washed over me. For some reason, a thought popped into my head.
How did Dad say he met my stepmom again...?
"Today, this pretty girl stopped me to ask for directions. We got to talking, and get this—she's a single-parent kid like you, Jinseong."
Dad, who was always off on weekend business trips to faraway places, came home beaming that day, his voice buzzing with excitement.
Back then, I just thought it was a coincidence.
"Jinseong, I've got a check-up today. Wanna come along? I'll buy you something tasty."
After Mom died giving birth to me, Dad became obsessively strict about health check-ups. He'd always drag me to the hospital with him and have the doctor check me over too, just in case.
"Dad's doing a sleep endoscopy, so you wait outside quietly, okay?"
I nodded at Dad's words right before he headed into the procedure room. But honestly, I wasn't really listening.
"Hehe!"
The nurse told me to sit in the waiting area, but with my full attention glued to computer games, I bolted straight for the hospital lounge's PC stations instead.
Tap-tap!
I'd been there enough times to know the layout by heart, so it only took a few minutes to find the lounge and the seats.
"Ah...!"
All five stations were occupied. I snuck around to check the timers—four of them had over two hours left.
"This one's the best..."
The fifth seat showed about 50 minutes remaining near the coin slot. Looking back now, that must've been annoying as hell for the user, but as a clueless elementary kid with no concept of manners, I just hung over the back of the chair, staring blatantly at the screen.
I don't remember the rest, but it was definitely something like that.
Having been drilled by Dad that life is precious like it was brainwashing, the word "suicide" made me jump. I checked out the person using the PC.
"..."
Bandages wrapped around their head made it hard to tell gender at first glance, but they were definitely around my age.
"Suicide's bad, though..."
I muttered something an adult never would've said.
"Why?"
The pale-faced kid whipped around to ask me right away. That's when her voice hit me—and those eyes, utterly devoid of any spark.
"W-Well, you shouldn't commit suicide, right?"
I blurted it out with zero basis or reason.
"There's no reason left to live in this world. Why shouldn't I?"
She shot back.
"If it's a reason to live... Um, you've gotta play fun games... Eat tasty stuff like pizza or chicken..."
I rattled off things I liked, but her iron-mask expression didn't budge—she clearly wasn't convinced.
"Anyway, there are tons of reasons to keep living!"
"Not convinced at all..."
"You just don't get it. Trust me—living's way better than dying!"
It was baseless confidence, but I yelled it anyway.
"Hehe..."
For the first time, she smiled and looked me straight in the eye.
"So, you're saying I should live because I trust you? Or live while looking at you?"
Huge difference between those, but with my elementary-school comprehension still lagging, I just went:
"Uh, yeah...?"
"Got it. And I've been noticing—you wanna use the computer?"
I nodded eagerly.
"Go ahead. But only 30 minutes."
"Really?!"
She was giving me 30 out of her 50 minutes. The nurse said Dad would be done in about 30 anyway, so I figured it was a gift from the gods.
"Sit down and play."
"Okay!"
I plopped into the seat she vacated and loaded my usual game. Typing in my ID and password. Looking back, it felt weird how intently she watched my hands.
"Time's up."
Her cold voice cut through mid-game, right as a crucial team fight kicked off. A chill ran down my spine; I glanced over.
"Out."
"Uh... okay."
Those hollow eyes made me stand without protest.
"Oh! Dad's waiting!"
Then I remembered Dad was probably done and bolted from the seat like my life depended on it.
...So why the hell am I thinking of this now?
Why do that bandaged girl and my sister—who always smiled gently and hugged me—keep overlapping in my mind?
I have no clue.
The edges of my white vision started staining red.
As the red grew larger and closer, intense emotions flooded into me.
Terror filled me to the brim from the deep, obsessive emotion, but I couldn't flee a single step.
Slurp...
Eventually, the white space I stood in was completely swallowed by red.
Flash—!
My eyes snapped open in an instant.
'Where... am I?'
My blurry vision made out a dim space: neat tiles, silver drain pipes like pillars, and a sink above them. That's when I realized I was in a bathroom.
But this height? Not my normal standing eye level, nor the floor-hugging view from when I became a dick. Right in the middle? Felt like I was dangling in mid-air from something.
Twitch...
I tried to move instinctively, but...
'Can't move?'
No matter what, nothing budged. I wasn't expecting hands or legs, but I figured the shaft and balls would at least wiggle. Nope. Like they didn't exist at all.
Just sight and hearing remained.
Did I become something beyond a dick? As that thought hit...
"Hehe—awake now?"
...Sis?
Her familiar laugh echoed, and in the mirror above the sink, I saw her reflection: short bob covering her ears, slim eyes crinkled in a smile with a beauty mark beneath, glossy pale-purple lipstick on her lips, sharp V-line jaw dipping into her collarbone, and her full, round breasts swaying. Even the pink areolas and perky nipples smack in the center.
Hot flush...!
'W-What the!? Why's Sis naked!?'
The mirror only showed her face, chest, and belly, but her lean 11-shaped abs and navel down were bare skin too—no clothes on her upper body at least.
"Can you see? Ah—depending on your spot, Jinseong, maybe not..."
She stepped back, giving the mirror a fuller view.
...Pubes.
I shouldn't look, but I'd already glimpsed her neat bush and Y-shaped slit once before... Wait, where...?
An elephant-trunk-like meat rod dangling down, thick balls sagging below.
That shape was way too familiar—exactly like mine after I turned into a dick, checked in the mirror.
"Hehe... See? Us fused as one?"
...Fused?
Twitch—!
Shock surged through me, making my body tremble, and Sis started explaining.
"When a man turned dick has high compatibility with his host woman, their memories and bodies fuse smoothly... Looks like you and I had great compatibility! Your memories... How you saw me... All flowed into me...! I just took care of you 'cause I liked you...! But you... My Jinseong cared for even this side of me...! Ahh...!"
She hugged her breasts, twisting her body, babbling nonsense, then...
"...I love you even more now!"
Her face wild with madness as she declared it.
Even an oblivious guy like me knew this wasn't sisterly love or fondness for an object.
Why...? Why me for her?
Confusion, anxiety about my state—my head spun. Then...
Smooth...
Her index finger gently stroked the top of my shaft.
"Still... Kinda hurt that you didn't remember me."
...Didn't remember?
No way... That girl from the hospital...!
"Should I live just by looking at you?"
The bandaged girl who said that was...
"Nah, maybe it's a good thing? Let you drop your guard around 'Sis' and reach this point."
...Sis.
Everything clicked in my head, chills creeping up at one horrifying hypothesis.
From start to finish. Right from that hospital, she'd been plotting.
Logging into my game—items I'd left messy were sorted, acquaintances added as friends grilling me on questions I'd never asked.
Dad's regular weekend trips to the same station for public transit.
The remarriage to Stepmom, and every time I tried going out, her sweet but firm words blocking me...
All her plan...?
"To end up as one body... Even heaven blesses our bond! Yes—it's fate!"
Sis wasn't right in the head. Seriously not.
...And now I'm fused with that Sis?
Horror crashed in, desperate urge to escape—I thrashed wildly to move.
Twitch... Twitch...!
Just slight twitches from the shaft and balls. No real movement.
"Haah...! S-So intense already... You're happy to be one with Sis too, right, Jinseong?"
Trapped in a noose of her body, I couldn't budge an inch.
...Damn it! Move, damn you!
As I flailed in futile resistance...
"Haa... haa..."
Her excited breaths came, laced with arousal.
"Keep twitching like that and...!"
Crunch—crunch—
...Huh?
A burning heat spread through my whole body.
"...Sis'll get too turned on...!"
Drip!
Thick veins bulged along the shaft.
"Haaaang—!!"
—Shlorp—!
Lewd moan rang out as my shaft reared up, foreskin peeling back to reveal the pale-red glans glistening.
Twitch—! Twitch—!
Crunch...!!
...Guhk!?
Against my will, fully erect now!
...Ow... it hurts! Gonna burst...!
Agony like my body would explode, vision spinning from the insane lust.
Just from erection? No, something was wrong.
Crunch...! Crunch...!
Couldn't explain it, but this 'erection' was off. My normal size was about 14cm.
Twitch... Now, attached to Sis, it looked at least 18cm.
Twitch... twitch...
Glans swollen blood-red, veins thicker and more numerous than before.
...Urghk...!! My... my dick's gonna pop...!
Clearly my body, my dick, but it was straining.
"Th-This is my beloved Jinseong's... first erection as mine!! Nghh... So much stimulation...!!"
Probably 'cause her arousal stacked onto mine.
...S-Save me! Make it go down quick!!
Shiver...!
Aphrodisiac-level lust impulses, body on the verge of bursting—I screamed internally.
"Jinseong's dick... So cute... Hehe."
Smooth—smooth—
But Sis smiled leisurely, stroking the erect shaft's surface casually.
Smoooth...!
Her slender fingers grazed the bumpy veins each time.
...N-No! Not now... Uwaaahk...!!
That light touch felt like rubbing against red-hot iron—intense sensation flared.
Gurgle—! Gurgle—!
Balls below bubbled with fluid.
"Ah...?"
Finally noticing, Sion let out a gasp.
Smooth-smooth-smooth—!
"Haht... haaht... W-What's this... Feels so weird...!"
She gripped the shaft fully now, stroking fast.
Gurgle...!
The churning in my balls intensified.
Squelch... squelch...
Sticky, clear pussy juice gushed greedily from the thick slit beneath the balls.
...C-Coming!! Coming!! COMING...!!!!
"Hahk—! Coming coming coming coming!! Something's coming out—higiit!!"
Me knowing full well, her experiencing it for the first time.
...Ugggghk—!!
"Hiiiik—!!"
Our moans intertwined—
Shwoop—!
Balls from the base lifted to kiss the shaft's root.
Blubblub—!!!
Spurt—!!
...Pure white semen erupted fiercely from the curved erect tip's urethra, shaking the whole shaft—a baptism of thick, milky fluid!
Splat—! Splat—!
Not just harder erection—the volume soaking the mirror was insane, more than I'd ever cum in my life.
...Ooooh...
Then my vision went white, memories blanking out.
——
Sizzle... sizzle...
"Aah... ahh..."
Sion, Jinseong's sister, squirted from her pink crotch slit, moaning.
"Th-This is the male pleasure from Jinseong's...!"
Eyes gleaming like she'd found treasure, she stared at the spent, limp shaft after one ejaculation.
"Ah...!"
Spotting the fishy white fluid splattered on the mirror...
Smooth.
She stepped closer slowly, reaching out.
Sticky...
Feeling the warm cum on her fingertip.
"Ahm—..."
She brought the cum-coated finger to her mouth.
"Mmm—mmph...!"
Savoring it like a delicacy, she licked and chewed, devouring most of the mirror's load.
"Haaa— so tasty—!"
Breath heavy with semen scent, she grinned twistedly in delight.