[Hospital, Stairwell B ]
---
Voices echoed up the concrete stairwell. Two of them. Male. Young.
The conversation floated through the fluorescent-lit corridor below:
"There was definitely noise on the rooftop. Sounded like someone was up there."
"Yeah, let's check it out. I heard nurses sneak up to smoke sometimes. If we catch one... hehe, maybe we can work something out."
---
Emi clicked her tongue.
Her grip on Riku's wrist loosened. The electric mischief in her amber eyes dimmed into mild annoyance. Without a word, she descended the stairs with Haru in tow, their soft-soled nursing shoes barely whispering against the steps.
The two sisters stopped at the stairwell landing just as two young male interns rounded the corner.
Both men froze. Their eyes went wide with recognition.
"Nurse Tachibana! Both of you!"
One of them—a gangly guy with crooked glasses—practically bounced on his heels. The other, shorter and rounder, adjusted his collar nervously.
Emi's lips curled into a smile that didn't reach her eyes. "Mm. Evening."
These two again. Always sniffing around like stray dogs whenever onee-chan and I are on shift. Her fingers twitched at her side. Terrible timing. I was just about to—ugh.
Haru said nothing. Her expression settled into the cold mask she wore like armor—the one that made junior staff avoid her gaze and senior doctors speak to her in clipped, professional tones. But beneath the frost, a flush crept along the edges of her cheekbones.
Don't look down. Don't move too fast. If they see—
Her right hand drifted to the hem of her skirt, tugging it lower. The fabric barely covered mid-thigh. Beneath it, warmth still trickled in lazy rivulets down the inside of her leg. Riku's seed. Thick. Cooling slowly against her skin.
She pressed her thighs together.
I can feel it. Still dripping. God, there's so much of it.
From his vantage point near the rooftop door, Riku watched from the shadows. The angle kept him hidden—Emi and Haru's bodies blocked the interns' line of sight entirely. But he could see everything.
Haru's subtle fidgeting. The way her fingers kept pulling at the white hem. And lower—where a thin streak of milky fluid glistened against her inner thigh, catching the harsh overhead light.
「She's practically painted in your cum, and those two idiots have no idea. One wrong move and they'll see exactly what kind of woman their ice queen really is. What do you think they'd do if they knew? If they saw her trembling thighs, still wet from—」
Shut up.
The gangly intern opened his mouth. "Um, Nurse Tachibana—the older one, I mean—we heard something from the roof just now. Was someone—"
Haru's glacial stare cut him off mid-sentence.
He swallowed. Hard.
"N-never mind. We'll just... go."
"Smart," Emi chirped, her voice saccharine. "Busy night. Lots of patients. Shoo."
The two men retreated down the corridor with hurried steps, their hushed conversation trailing behind them:
"Holy crap, Nurse Haru is terrifying. Beautiful, but terrifying."
"Nurse Emi seemed pissed too. What'd we do?"
"Let's just go..."
Their footsteps faded into silence.
Riku nearly laughed.
Terrifying? Haru? The image of her moments ago—gasping, back arched, eyes rolled up as she came around him—flickered through his mind. Yeah. Real scary.
He descended the stairs. The door clicked shut behind him, sealing the unconscious female doctor on the rooftop for the night.
She'll wake up with one hell of a headache. Serves her right.
"Riku-kun!"
Emi bounded toward him, her twin-tails bouncing. Before he could react, she looped both arms around his bicep and pulled him close. The soft weight of her chest pressed into his forearm.
"Come with me? There's a place. No one goes there. We can..."
She let the sentence hang, her grin all teeth and wickedness.
No one goes there.
Heat stirred in Riku's gut.
「And there it is. The little devil makes her move. Onee-san got her turn—now imouto wants hers. Are you really going to make her wait?」
Before Riku could form a response, Emi was already dragging him down the corridor.
"Onee-chan, you should come too!" she called over her shoulder. "It'll be fun!"
Haru's blush deepened. Her voice came out strangled. "Emi... we're still in the hospital..."
"So? You didn't seem to mind earlier—"
Riku clamped a hand over Emi's mouth.
"Mmph?!"
Just in time. A nurse from the duty station leaned around the corner, clipboard in hand. "Nurse Haru! Beds thirty-four and thirty-five need dressing changes!"
Haru straightened. "Understood."
Emi's eyes glittered above Riku's palm.
Perfect.
She pried his hand away and beamed at her sister. "It's late! Riku-kun needs rest. I'll drive him home—you handle work, onee-chan!"
Before Haru could protest, Emi hauled Riku toward the emergency exit.
Left alone in the corridor, Haru tugged at her skirt one more time. Her thighs were sticky. Her underwear—what remained of it after Riku had torn the fabric aside—clung to her uncomfortably.
There's too much, she thought, cheeks burning. I need to clean up before I can do anything.
She turned toward the staff bathroom, walking carefully, knees pressed together.
---
[Hospital Parking Lot]
---
Rain began to fall.
Light at first—a misting drizzle that clung to skin and fabric alike. Then heavier, drumming against the asphalt in a steady rhythm. The night air carried petrichor and the faint chemical tang of hospital exhaust vents.
Emi stopped beside a white compact car. A Suzuki Swift, older model, with a small dent near the rear bumper.
"Riku-kun." She tilted her head, rain speckling her cheeks. "Can you drive?"
He'd gotten his license a year ago. "Yeah."
Her grin widened. Something predatory flickered behind those amber eyes.
"Then you're driving."
She didn't wait for agreement. The driver's door swung open and Riku found himself shoved into the seat before he could protest. Emi rounded the hood and slid into the passenger side, her nurse's uniform already damp and clinging to her curves.
The door shut. Silence enveloped them, broken only by the rain tapping against glass.
「Alone at last. Dark car. Rainy night. Her perfume—cherry blossoms and something sweeter—filling the space between you. The seats recline, you know. All the way back. Just reach for the lever and—」
Riku gripped the steering wheel.
"Where am I going?"
"Your place." Emi stretched in her seat like a cat, arms overhead, back arching. The motion pulled her uniform tight across her chest. "For now, just drive."
For now.
He turned the key. The engine rumbled to life.
---
Three minutes into the drive, a delicate hand slid across the center console.
Riku felt fingertips trace along his hip. Light. Exploratory. They dipped beneath the hem of his shirt, grazing bare skin.
"Eyes on the road, Riku-kun." Emi's voice was a melodic purr. "Don't get distracted~"
The rain intensified. Visibility dropped. His windshield wipers beat a frantic tempo.
"Emi—this is dangerous—"
"Hmm?" Her fingers walked lower. Over his belt. Along the zipper. "What's dangerous? I don't understand~"
This girl...
Her touch found the growing bulge straining against denim. Her palm pressed down, rubbing in slow circles.
"Caught it~" She giggled. "Waaah, Riku-kun... no wonder onee-chan couldn't stop moaning."
The car swerved.
Riku slammed the brakes. Tires squealed against wet pavement. The vehicle lurched to a stop along the curb, engine idling.
"What are you doing?!"
He turned to find Emi leaning across the console, practically draped over him. Her nurse's cap had fallen off somewhere. Rain-damp hair framed her face. The top buttons of her uniform had come undone—whether by accident or design—revealing the swell of pale breasts cradled in white lace.
I can see everything.
"Hehe." She licked her lips. "Now I get why onee-chan acts all soft around you."
She's nothing like Haru.
Where Haru was shy fire beneath ice, Emi was pure mischief. A devil in nurse's clothing.
"Emi—"
She reached past him. Grabbed a pack of wet wipes from the glove compartment. Drew one out and cleaned her fingers with deliberate slowness.
"There. All fresh."
The cooling sensation of the wipe contrasted with the heat radiating from her body. The car smelled of rain and antiseptic and something else—something warm and musky beneath the clinical scent.
Before Riku could object, her head dipped.
His belt clinked open. Zipper descended. And then—
"Sssshhhhh—"
He sucked air through his teeth. His cock sprang free, already rigid, the tip flushed and glistening with precum. Emi's small hand wrapped around the shaft immediately, her fingers barely meeting around the girth.
"So thick..." she murmured, almost to herself. "And this vein here..." Her thumb traced along the underside, following the ridge. "It's throbbing."
I can feel his pulse. God, he's so hard. Did I do this? Or was it onee-chan earlier?
Her tongue flicked out. Just a taste. A kitten's lick against the crown.
"Mmm. Salty."
Then her lips parted—and she took him in.
"Haaah—!"
Riku's head fell back against the headrest. Wet heat engulfed him. Her mouth was impossibly soft, impossibly tight, her tongue swirling against the sensitive underside as she sank lower.
"Mmph... nnn..."
Muffled sounds escaped her stuffed mouth. She couldn't fit more than half—he was too big—but what she lacked in depth she made up for in enthusiasm. Her head bobbed. Saliva dripped down his shaft, pooling at the base. The obscene schlick-schlick-schlick of her movements filled the car.
Riku's hand found her hair. Fingers tangled in damp strands. He didn't push—just held on, anchoring himself as pleasure crackled up his spine.
"Slower—"
Schlick. Schlick. Schlick.
She didn't slow down. If anything, she moved faster. Her free hand cupped his balls, rolling them gently, feeling them tighten with each stroke of her tongue.
He's close. Already? Or is he holding back? Let's see how long he lasts~
Rain hammered the roof. Condensation fogged the windows. And in the driver's seat of a borrowed Suzuki, parked crookedly on an empty street, Riku Riku gripped a fistful of amber hair and tried not to lose his mind.