The Proper Gochu Masturbation Method to Teach My Little Sister
"Oppa usually... how do you do it? I wanna know."
She was dead serious. Her eyes were dead serious. That intense focus Chaeyoung gets whenever she's learning something new—exactly like when she used to bug me for homework help as a kid. And now this brilliant girl was asking me for masturbation tips. About my gochu.
"...First off... you got any lotion?"
"I have hand cream."
"Grab that."
Chaeyoung pulled some hand cream from the drawer by her bed. Fancy-looking tube. Smelled nice.
"Put it on first. It'll chafe and hurt if you don't."
"...Ah."
Her face lit up with realization. Guess last night had rubbed her raw a bit. I'm used to it by now, but she's still a newbie. If she gets too carried away and hurts herself, I'm the one who suffers. Better slather on some lotion.
"And don't grip too tight when you hold it. Like holding a boiled egg."
"A boiled egg?"
"Firm enough not to crush it."
"...Got it."
Chaeyoung squirted some hand cream into her palm. Wrapped her slippery hand around the gochu. The sensation hit me the instant she did. My body too. That cool, slick grip closing in. And the faint scent of the cream.
"...Mm."
I almost let out a sound. Held it back. If I react now, things'll get even weirder. Weirder than they already are.
"And don't go fast right away. Nice and slow."
"Like this?"
Chaeyoung's hand started moving. Slowly. The lotion made slick little sounds. The feeling shot straight to me. Same as last night, same as this morning. But different now. Because I was watching it happen right in front of me. Her pale, slender fingers wrapping around my gochu, sliding up and down. It was... hotter, somehow.
"...Looser."
"L-like this?"
Chaeyoung's breathing was picking up a little.
"Yeah. And when you pass the tip up top, give it a little twist."
"Twist?"
"Like turning your wrist."
She tried it. Rubbing up, wrist twisting.
"Ngh."
Couldn't hold that one back. Chaeyoung's eyes went wide.
"...That. You felt that too, oppa?"
"Yeah. Felt it."
"You like it there?"
"...Probably."
Her eyes sparkled. Full-on research mode. This girl was treating masturbation like a science experiment.
"So if I do it like this when I pass that spot..."
She did it again. Twisted.
"Ha...!"
Breath slipped out. Chaeyoung watched my reaction. Every time her hand moved, she studied my face.
"Oppa. This is kinda fun."
"It's not a game."
"I know. But it's fun."
Her voice had changed. Not the whimpery tone from before. Now it was breathy, a little heated. She was feeling it too. The sensations from touching the gochu, plus the thrill of watching her big brother react right there in front of her.
She was finding a rhythm. Her strokes got smoother. The lotion helped it glide. Her grip was better now too. The pleasure was building. Something rising from deep in my gut. But... it felt a little...
...stuffy.
"...Hold up."
I said.
"What?"
"Lemme show you."
Chaeyoung's hand stopped.
"...You?"
"Yeah. It's mine, right? Faster if I just demo it."
That was the problem. Such pretty, soft hands. With lotion on top. Perfect setup. Should feel amazing. But she was already satisfied with that. Overflowing with pleasure as it was. I knew there was more to it, though. Felt like she was wasting her potential, settling for less.
Chaeyoung let go. The gochu throbbed upright, glistening with lotion. I reached for it. Grabbed my gochu—attached to my little sister's body. Familiar feel. Twenty-plus years with the thing. Fit my hand perfectly. But the situation? Not even close.
My hand was between her thighs. Her breath right next to my ear. I started stroking. My usual way.
"Ah...!"
Chaeyoung's back arched. A little yelp escaped.
"O-oppa, wait, that—it's too...!"
"This is my normal speed."
I gripped the shaft firm and pumped. Routine for me. Not for her.
"F-fast, too fast...!"
"Nah, this is standard. You were just going too slow."
Different development levels. Different speeds. Chaeyoung clutched the sheets. Eyes half-lidded. Biting her lip, but moans leaked out.
"Ha, ah, ngh...!"
I felt it all, obviously. Jerking my own gochu. Double sensations—my hand's grip and the gripped feeling at once. But that wasn't all. The sight in front of me. Chaeyoung gripping the sheets, arching her back, face flushed, panting hard. This was a handjob. From me, to my little sister. And she was loving it. Shouldn't get excited. But even dickless, I was. Gut heating up. Phantom erection.
Her thighs started trembling. Core tightening. I knew this buildup. About to blow. So I stopped.
"...?!"
I let go, and her eyes snapped open. Edged right to the brink. Breath ragged, eyes misty.
"O-oppa?!"
"You've done enough today. That's it. Time to rest."
She looked even more pitiful than when she'd been crying earlier.
"R-right now?! Stopping now?!"
"Yeah. Right now."
The gochu twitched in protest in the air. The near-climax buzz lingered for me too. Honestly, I was disappointed. But we'd already gone a bunch today. One more would be too much. Gotta rest when it's rest time.
"It's my gochu. I decide when it cums."
"Even if it's yours, it's attached to me! Finish it!"
The haughty ice queen Chaeyoung clutching the sheets, throwing a tantrum. Tears welling up. Not from shame this time. Purely begging her brother for a handjob, no embarrassment.
"Chaeyoung."
"Please, oppa. Just a little more... it's right there..."
Please. From Chaeyoung's mouth. How many times had she ever said that in her life? I nodded slowly.
"Fine."
"Really?"
"But after you eat."
"...Eat?"
"Wash up and eat. Then I'll finish it. Promise."
Chaeyoung stared up at me, face blank. Brain processing.
"You haven't eaten since yesterday. Keep cumming like that on an empty stomach, you'll collapse. Eat first. Then I'll take you all the way. Promise."
"...Promise?"
"Yeah. Promise."
She fidgeted under the sheets. That pre-orgasm ache still lingering, no doubt. I felt the gochu throbbing too. Knew how hard it was to hold back. But she gritted her teeth. Kicked off the covers and stood.
The girl who hadn't left her room all day. Grabbed a towel from the closet at warp speed.
"I'll be quick!"
Dashed to the bathroom. Door slam. Shower on. Chaeyoung doesn't run. She's all poise and elegance. How many times had she bolted today?
I sat alone in her room, thinking. I'd just edged my little sister and promised to finish her off after dinner. Dangled a carrot—masturbation bait—to get her moving. To my sister.
"What kinda life is this?"
Scratched my head and headed to the kitchen. Time to boil water for ramen.
Humming drifted from the shower. First time hearing Chaeyoung hum.
Five minutes. Exactly. Water just starting to boil when the shower door opened. Chaeyoung takes ten minutes on hair alone—conditioner, treatment, the works. Five-minute shower from her. Power of horniness.
She came out with wet hair roughly turbaned in a towel. T-shirt and shorts. Short shorts, not her usual training pants. Must've changed after washing up. That top-campus-beauty aura peeking through.
"Sit. Almost done."
She plopped at the table. Set the ramen pot in the middle. Two sets of chopsticks.
"Looks delicious!"
Genuine excitement. No wonder—she hadn't eaten since yesterday morning. Jerking off nonstop for nearly two days without food? Insane.
"Eat up."
Chaeyoung grabbed her chopsticks. Slurped it down. Savored every bite.
"..."
Eating well, but not rushed. Savoring, yet quick. Even her chopstick work was graceful. Warm broth hitting her empty stomach must've felt heavenly. Those doe eyes half-closed in bliss.
"..."
I sat across, chin in hand, watching. Weird feeling. How long since we'd sat like this, sharing a meal? Lived together, but meal times rarely overlapped. Even when they did, she'd scroll her phone, pop in earbuds, or wolf it down and vanish to her room. No interest in hanging with her brother at the table.
Somehow, my chest warmed. Knew it stemmed from this bizarre situation. No dick transfer, no scene like this. And after? Helping her finish. Not normal. But...
Not bad.
"Good?"
"...Yeah."
Her face was soft. Hard to believe it was the same girl bawling and begging minutes ago. Noodles nearly gone, she sipped broth and suddenly said,
"Oh yeah."
"Hm?"
"Oppa. That pee thing yesterday morning... was that you?"
"Ah."
Remembered. Yesterday morning. I'd peed in the toilet—nothing came out. But Chaeyoung screamed bloody murder.
"...Yeah. That was me."
"Knew it."
She dropped her gaze to the broth.
"Woke up and my sheets were soaked. Thought I'd wet the bed in my sleep. But the gochu freaked me out so much, I forgot about the pee."
"Sorry. Didn't know then."
"...Not just morning."
Her voice got quieter. Shot me an accusing glare.
"That time in the afternoon, suddenly desperate and bolting to the bathroom. That was you too, right?"
"Yeah."
Probably three times total. Every time I peed, she raced to the toilet. I just chilled in my room feeling relieved; she had to sprint every time.
"Warn me before you pee!"
"...Will next time."
Weird. Gotta ask permission from my sister to piss now. But she's the one pissing, so no choice. And god forbid I did it outside—disaster.
"But oppa."
"Yeah."
"When you pee, I pee."
"Right."
"So if I go to the bathroom and pee... what about you?"
Fair question.
"I just feel the relief. Nothing comes out for me."
"Lucky."
Chaeyoung pouted a bit.
"I get it blasting out of nowhere. First time yesterday, I was standing. Ran down my legs, soaked the sheets. Right after waking up."
"...Sorry."
Meant it. Pure relief for me; nightmare for her.
"Tell me before you go from now on. I'll head to the bathroom ahead of time."
"Got it. I'll text you."
"...Texting 'About to pee' is kinda weird."
"Emoticon then."
She giggled.
"Emoticon. A peeing one. Hilarious."
Been forever since Chaeyoung laughed at my jokes.
"All done?"
"Yeah."
Pot spotless. Broth gone.
She looked at me. Eyes full of expectation. Knew what for.
"Washed up, ate up?"
"Yeah."
"...Promise is a promise."
I stood, answering.
"Your room? Or mine?"
"Your room!"
Chaeyoung shot up. Who knows how many times she'd jumped up today.