A Tenderness Reserved for Him Alone
[Seo-ah's POV]
"Time to head out."
The sound of running water stopped. Seojun draped a bath towel over her naked body. The moment they stepped out of the bathroom door.
Ah. It felt like waking from a dream. A battlefield. On the sofa. Bloodstains smeared between her torn hymen. Foam spewed from her pussy. Our bodily fluids scattered everywhere. And.
My piss.

I'm losing my mind, seriously... Shame burned her face like it might explode. A grown woman pissing herself while getting fucked by her little brother. She stole a glance at Seojun. His shoulders were stiff. That overly kind idiot. He'd shoulder all the guilt alone again, no doubt.
"S-Seojun. I'll clean it up."
She grabbed the towel and lunged forward. But as she stretched her legs.
"Ow...!"
A sharp rip. The torn hymen. Split, inflamed mucous membranes. Her swollen pussy lips. Agonizing pain surged up.
"Hng...!" Her legs buckled. She staggered.
"Sis!"
Just as she toppled toward the floor, strong arms caught her waist. She collapsed into Seojun's embrace once more.
"What are you doing? It still hurts, doesn't it?"
His scolding dripped with worry.
"Still... it's my mess, so together..."
"Forget it. Just stay put."
Seojun scooped her up effortlessly. He set her down gently on a dining chair. Then he dashed to the living room, snagging the blanket from the treadmill.
"Don't move a muscle while I clean."
He left her with that nag and bolted to the utility room. Soon he returned, rubber gloves on, cleaner in hand. He set to work, zipping around the living room. Spray!Hiss!Scrub scrub scrub! That steadfast back, silently wiping away her waste and blood. Without so much as a grimace. It had to be filthy. Clutching the blanket, she stared at his back.

Thump. Thump. Her heart pounded. The kid she'd always had to protect since childhood. But now, her protector. The man she loved most had taken her virginity. Filled the depths of her womb with his seed. Who else could make her feel this tender affection?
Squelch. Drip. Slurp.
"Hng, haa..."
Her lower belly heated up. Leftover gunk trickled down her inner thighs. This was it. The feeling of being claimed by the man she loved. Of him possessing her. She wanted to go weak. To lean on him endlessly. She was a woman, after all.
Cleaning done. The piss stench gone. Replaced by a faint diffuser scent. Seojun peeled off his gloves and approached.
"Why haven't you dried your hair? You'll catch a cold."
Water dripped from her silver locks. She'd deliberately let it hang, sitting still. Waiting obediently for him to dry it himself.
"Well..."
"......"
"My arms hurt too much."
A blatant lie, delivered innocently. Seojun let out a disbelieving chuckle.
"You scratched my back raw earlier, and now your arms hurt?"
"Shut up and dry it already. I'm cold."
She grumbled, yanking the blanket up to her chin. Seojun grabbed the hairdryer and stood behind her. Vrrr! Warm air. His fingers ruffled her hair. Rough man's hands. Yet endlessly gentle and caring.

I'm happy. Warmth bloomed in her chest.
"Ow, too hot."
"Sorry. Did it burn?"
"Blow from farther away, like I said."
Embarrassed, she grumbled to cover it up.
Seojun opened the cabinet under the TV. First-aid kit. Click. Tweezers and gauze. Disinfectant. He leaned in close, peering at her face. Their breaths mingled, gazes locked from inches away.
He's so handsome... That serious expression. Her everyday little brother—why did he look so incredibly hot right now? Thump. Thump. Her heart raced so loud she feared he'd hear.
"Move your bangs."
As he brushed her hair back, he furrowed his brow. No wonder. She'd bashed her forehead on the floor to fend off the pleasure. The skin was torn, crusted with blood.
"Why'd you stupidly slam your head like that? Seriously."
His grumbling voice brimmed with distress. Swish—
"Ow!"
"Hold still even if it stings. It'll get infected if we don't disinfect."
She flinched instinctively. Even a genius mage had specialties. Neither she nor Seojun knew healing magic. They had to rely on medicine.
"Don't move. Stay still."
His hand cupped the back of her neck softly. Then he pursed his lips and blew gently on the wound.
"…."
A motion like a kiss. Unthinkingly, she closed her eyes and pursed her lips too. Ah, her heart fluttered again.
"What if it scars? On a girl's face."
But no kiss came. Just a reproach laced with concern. He wasn't ignoring her—his eyes were fixed on the wound.
"It hurt so much... I was going insane, I swear."
"I know. But no more self-harm. It hurts me."
The ointment-smeared swab rolled lightly over the wound. A feather touch, lest it hurt. Once done, he taped the gauze meticulously. Their hands and faces parted. She regretted it already, aching to hold on. But embarrassment won; she fiddled with the back of her neck instead. His warmth lingered there.
"......."
A sharp pang in her heart.
"All set. Time to get dressed."
Seojun thrust something at her. Worn, baggy sweatpants. His usual sleepwear.
"Huh? What's this?"
"Uh... they say when a girl's sore down there, loose pants are best."
A cough. He averted his eyes.
"For airflow. Just wear these. It's really swollen."
Gruff words hiding thoughtful care. But fear gripped her.
"These are your pajamas. What if they get dirty?"
"......"
"I'm still bleeding a bit. You sure?"
"I'll wash 'em. Infection's worse. Hurry up and put them on."
Endlessly kind scolding. Her nose stung. She dropped the blanket and slipped into the pants. The fabric, steeped in his scent, enveloped her lower half. Squelch. Drip. Against her unsubsided swollen red folds. Her heaving pussy brushed the cloth. Pent-up fluids gushed out.
Ah.
Her insides grew slick. But relief overpowered shame. His scent and warmth cradling her down there.
Seojun crouched, folding the blanket. She gazed down at him. Sturdy shoulders. Thick neckline. She couldn't hold back. Sliding off the chair, she lunged, wrapping her arms around him.
"Wha—S-Sis?"
Seojun stumbled into her embrace. She buried her face in his broad chest. Nuzzle. Nuzzle. Like a puppy burrowing into its owner's arms. Rubbing her cheek against the man who'd claimed her.
"Wh-what's this? Suddenly. It's hot."
Flustered, he tried to pull away. She clung harder. He gave up resisting. His hesitant hands settled lightly on her back. Pat. Pat. Slow, rhythmic strokes. Pure affection, nothing else. Tears she'd held back burst forth.
"Seojun."
"Why crying again? Does it hurt somewhere?"
"Thank you."
"For what."
"Everything. Just... all of it."
Self-loathing. She was so disgusting, so repulsive. Spreading her legs for her brother. Exposing her filthiest parts. Even pissing herself moments ago. Howling like a beast. What man would love such ugliness?
I'm too dirty. Too vulgar. She deserved contempt. But Seojun didn't scorn her. He worried for her body. Silently cleaned her mess. Nursed her ruined hole. Gave her his own pajamas. Treated her as a woman. She was grateful beyond words. Her shoulders trembled in his arms.

"For not throwing me away... not calling me dirty... not hating me... thank you so much."
Her voice choked with sobs. His patting hand paused. Then it ruffled her hair roughly.
"Family doesn't throw each other away. Don't be an idiot alone—wipe those tears."
Looking up through teary eyes, she saw his earlobes flushed crimson. Pfft. A foolish laugh escaped. Their brother, kind to a fault.
She subtly crossed her legs. A pleasant friction. Even that felt shyly thrilling. A small deep breath. She pressed her lips to his ear.
Just for a moment, back to her usual big-sis self.
"Hey."
"What."
"You know your lecture starts at 9 tomorrow morning, right?"
"Yeah? I know."
She whispered, syrupy sweet.
"......"
"The potion'll wear off by morning."
"......"
"So get up by 7:30 at least."
Mwah. A light peck on his cheek, like stamping a seal.
"First thing, fill my pussy nice and full with your cum. Got it?"
How would he react? Her sweet, innocent brother. She waited, expectant yet worried.
“…”
Stifling silence. Had she crossed the line? Did he hate her now? Stupid bitch, mouthing off like that. Her eyes stung again.
“Haa…”
Seojun rubbed his forehead with both hands. A deep, profound sigh.
“….”
Terror gripped her. Apologize now? Cling and beg? Sorry for the vulgar words. Sorry for being a filthy sister.
"Seriously! You're embarrassing me! What kind of talk is that already?!"
Phew. Relief. Grumbling reproach. Her usual brother's scolding.
"If you wanna see your sis crawling to work, pussy juices leaking everywhere, then sleep in all you want."
She shot back with her usual snark. Thank god. She hastily blinked back the tears.
"Fine, I get it!! I'll get up!! Just stop with the low-class talk!!"
His face exploded red.
“Ahahaha! Are you embarrassed right now? After we've seen every inch of each other? Hey! Yoon Seojun! What's this from my own brother?!”
She doubled over laughing. Tears of joy streaming. Ah, too happy.
==========================
[Seojun's POV]
Next morning. 7 AM. Before the alarm. A strange weight pressed down. Squelch. Slick. Wet mucous membranes squishing. Hot dampness soaking his thighs. Something felt off.
“Mm… mmph…”
He forced his eyelids open. What entered his sight.
Plop. Plop. Heaving blankets.
"Haa... ngh..."
And heavy nasal moans. He yanked the blanket away.
Shock.
"......"
Seo-ah lay prone between his legs.

Pale naked body. Silver hair plastered to her sweat-slick cheek. Wine-red eyes unfocused. And her lower half.
Bubble bubble. Her swollen crimson pussy relentlessly puked fluids. Bubbles popping, dripping onto his thighs. And not just that. Her slender white hands gripped his shaft, rubbing it frantically against her cheeks. Drooling like she might devour it any second.