Lunar New Year's Day
"Here, water."
"Ah... thanks, Oppa...."
I handed the glass to Gyeo-ul, who was sprawled limp across the bed, breathing softly in her sleep. ...Maybe I went a bit overboard. It felt like we'd gone at it for about four hours. Sure, the breaks in between were way longer, but we'd been glued together the whole time. Ejaculating itself... I hadn't done it an insane number of times, but whenever I did, it was so intense.
I watched my little sister's throat bob as she gulped down the water greedily, then slipped under the covers myself and stroked her hair.
"...You okay?"
"...Shouldn't you be the one asking that?"
"I didn't plan on it either. I was gonna take it slow, but... you kept begging me to do it like that."
"That's... just when we were in the middle of it. ...I didn't think it'd go on until Lunar New Year's was basically over."
...What was I supposed to do? You were the one seducing me, begging for it like that. No way I could've stopped.
"...Anyway, you back to normal now, Oppa?"
"Thanks to you. Feeling better."
"Good... then. ...You seemed pretty recovered when you were pouncing on me."
Seeing her fully back to her teasing self, poking fun at me left and right unlike her fidgety self from earlier—it put my mind at ease. ...Mostly my fault, though. Missing out on seeing the relatives on Lunar New Year's? My fault. Her getting all anxious? Obviously my fault, no need to even ask. Even seriously thinking about... pregnancy? All my fault.
I need to get my head straight from now on.
"...But let's get this straight. Did I pounce on you, or did you pounce on me?"
"Obviously you pounced on me, Oppa. ...Right?"
Ah, of course. Me snapping out of it and getting back to normal? All your fault. ...You got me all worked up and made me pounce—totally on you. I can't take the blame for this one too.
"What? Staring at me with those pervy eyes again. ...After all that."
"Just caught my breath, and now I'm good as new."
"Seriously... you're popping pills on the sly, aren't you."
"Well... I am taking something even more effective than pills."
Like A-yeon, or love, or... this secret relationship with my little sister. If we're talking dopamine rushes, it's basically like drugs, so calling it "pills" isn't wrong.
"...No more today. You'll wreck your body."
"I'm fine."
"Not you! ...I'll get wrecked. That's it for today. Got it...?"
"...You expect me to hold back after saying stuff like that?"
I pulled my babbling, naughty-mouthed little sister into a back hug, kneading her breasts softly and rubbing my cock between her ass cheeks. ...Ah, fuck, I can't hold back. It stung a little, but screw it. This calls for some punishment.
"Ah, seriously! Cut it out, Oppa...!"
"Why? Who knows when we'll get another chance to do this at home if not today."
"We already did it more than ten times today. ...I'm seriously wiped."
"...I only came four times?"
"...That's your story. I'm... y'know, a girl...."
...No wonder she was extra responsive today. Makes sense. I'd gotten a handjob from her a few days ago, but she'd held off for a whole week—just kisses and hugs, no touching anywhere else—so of course her body's on fire.
Feeling guilty, I groped her breasts even more roughly and blew into her ear, making her yelp "Eek!" and shiver with an insanely erotic reaction. I figured just teasing was too mean, so I turned her head and gave her a light kiss—her slightly sulky expression melted away instantly. ...God, she's such an irresistibly slutty little sister.
"Hearing you say that just makes it harder to hold back. How're you gonna take responsibility?"
"...I'll do it by hand in the shower. ...Just hold out a little."
"...By hand only?"
"...You total perv. Trash. Is that all you think about with me?"
"As if. I stick to you like this 'cause I love you."
"Total perv... ...Fine. I'll do something other than full se... sex in the shower... but absolutely nothing after. Got it?"
"Got it. One more time and even I'd be too spent anyway."
Seeing her grumble and curse me out with a face that wasn't hating it one bit only got me more excited. Wondering what she'd do next with a thrill of anticipation, I held her from behind as we waddled to the bathroom together. Even while walking, when I puffed air in her ear, she'd stifle a cute little "Hngh," but I held back from more play to keep my promise.
"Ah, Gyeo-ul. Hold up. Forgot to grab something."
"...What?"
"Lube."
"...You are such a perv, Oppa."
"You always lather up with soap in the shower and jerk me off. That's not pervy?"
"I... only do it 'cause you like it. Not pervy. All your fault. ...You taught me everything."
Her roundabout way of saying she'd do whatever I wanted was too adorable. I didn't wanna separate, but I really wanted to try this at least once, so I dashed back to the room and grabbed the love gel hidden in the drawer. I wrapped my arms around my patiently naked little sister again and stepped into the shower stall, rinsing off our bodily fluids with just warm water.
Gyeo-ul's front, slick with water, reflected hazily in the mirror. I wiped the steam away with my hand, turned off the shower, and squirted a generous amount of lube into my palm. I slathered it thick from her breasts down to her navel, making her whole body sticky and glistening. ...Fuck, her body's so hot. Seems even sexier now that she's been working out.
"...Oppa, stop."
"Why."
"'Cause it's embarrassing... stop."
"...This?"
"Anyway, it's embarrassing! ...Lemme get behind you instead. Let go."
...Is she that shy about her own naked body? Nothing to be shy about. She should be proud. Her abs look pretty toned now too. And those breasts... they've always been suspiciously perfect. What’s there to be embarrassed about now? But seeing her ears flushed bright red as she scurried behind me, I didn't feel like scolding her. She's my little sister, after all. A little cutesy whining's fine.
"...You've been doing whatever you wanted all day, so now it's my turn."
"I did everything you asked for."
"That's 'cause you got me all worked up! ...Now I'll tease you."
She huffed, declaring war on me, then squatted down to grab the discarded lube bottle and squeezed out so much it overflowed her hands. ...Kinda wasteful, but whatever, I can buy more. Then, reversing our positions, she hugged me tightly from behind. She washed my back with those breasts I'd groped earlier, and with her sticky fingers, she carefully gripped my cock and started stroking.
"Oppa... bend your knees a little."
"Why?"
"...I'll do whatever you want later, so just lower yourself a bit."
I spread my legs and bent my knees like she asked. Now at eye level with me, Gyeo-ul appeared in the mirror and—mimicking my earlier prank—pressed her lips to my ear and blew softly.
"...Ticklish?"
"...Obviously."
"Then why'd you do it to me?"
"To tickle you."
She sassed right back, and maybe getting annoyed, she gripped my cock harder and stroked more firmly. No longer just blowing air, she nibbled lightly too, fondled my nipples with her other hand, and pleasured me exactly as I'd taught her.
"...Feels good?"
"...Yeah."
"Who'd you learn it from?"
"...Your big bro."
"Yeah. From my big bro who loves his little sis so much... gets all depressed over pregnan...cy talk but still gets horny like a total perv."
"...You learned some weird shit, my little sis."
"...Yeah, Oppa."
Her fingers moved with confidence now, no longer awkward. She'd pretty much figured out how to stroke my cock to make me feel good—gripping just the right spots, making wet squelch-squelch sounds at a perfect, steady rhythm. Pinching my nipples didn't do much for me, but feeling hers rub against my back was weirdly amazing. And her whispers in my ear? Perfect fuel to reignite my lust after all those releases.
"Gonna... cum?"
"...Kinda feeling it."
"Where do you wanna... shoot?"
"...Inside your pussy."
"...Total perv."
I answered her question honestly, but she squeezed my cock again like it was ridiculous and scolded me. ...Doesn't hurt, but still unfair. I was just being straight with her. Her heavy breathing felt like cursing in my ear, clear as day, and her next words were filthy enough I wouldn't miss a single syllable.
"Not... inside my pussy. ...It's already filthy enough from you."
"..."
"If you wanna dirty up somewhere else... not already soaked in your color... ...I'll let you."
...Hoo, dangerous. One slip and I'll blow right here. Somewhere else. Out of my two favorite spots, which one? ...Fuck, can't choose.
"In your mouth okay?"
"...Yeah."
"...On your tits too?"
"...I said one time."
"We can do both. ...If I sit on the sofa."
I picked both, staring at Gyeo-ul's reflection—way more tense than usual. ...My face looks dead serious too. Can't blame her for getting excited. We're both wearing that male-and-female face right now.
"...If you kiss me on the way out... I'll do it...."
The second I heard permission, I spun around, pulled her into my arms, and crushed our lips together. Her hands slipped off my cock from the lube, but when I tapped her tongue with mine, she snapped to and wrapped her arms around my waist. This time, instead of hands, she trapped me between her thighs and backed us toward the sofa, step by step.
"Ha... ah... ...Titjob me."
"...Yeah."
"...Suck me off while you do."
"...Yeah."
We broke the kiss, and I sat on the sofa with my cock rock-hard. I had her kneel. She wrapped my lube-slick cock with her own sticky, gel-coated breasts. She swept her wet hair back a few times, then opened wide, stuck out her tongue, and engulfed my glans like she was devouring it. She licked every which way with obscene slurps, sucking with a firm smack-smack that wasn't pro-level yet but no longer clumsy, servicing her big brother's cock by squishing those massive tits around it.
"...Ngh, f-fuck... Gyeo... -ul...!"
The climax I'd already pushed to the limit earlier exploded from her needy upward gaze. Not a huge load after multiple rounds, but enough to properly filth her mouth.
"Ha... ah... ...Gyeo-ul."
"..."
"...Spit it on your tits."
She'd watched me twitch through it all, and at my command, she opened wide and stuck out her tongue, showing me the cum—more than expected, mixed with saliva. She gathered her breasts again and let it drip plip, plip between them.
...Haa, insanely hot. My little sister. I taught her too well. ...Including exactly what she wanted me to teach her. All tailored to my tastes.
"...Oppa."
"...Yeah, Gyeo-ul."
"You make that face when you cum... huh."
I didn't even know I made that face. ...She's got that heavenly girl-face too. Guess I had a proper manly one. Can't judge it myself, but if she likes it, fine by me.
"You've seen it every time. I just didn't know."
"I couldn't see well... 'cause of the kissing."
...She always begs for kisses mid-fuck, so yeah. She always breaks first before I cum. Eyes closed more often than not.
"How was it, doing whatever you wanted?"
"...Sometimes... it's okay. ...You seemed to love it."
"Gotta get good at the dirty talk. Right?"
"My perv big bro made me this way. ...Too much?"
"...Sorry. I'll take responsibility. ...For life."
She was tired from kneeling, so she sat back on her heels—the pose only girls can pull off. She toyed with the cum on her tits, then heard my confession (again, for like the tenth time) and beamed with undisguisable joy.
"...For real?"
"Obviously."
"...I'll rinse my mouth... then kiss me again."
...No need, really. I'd kiss her right now if she asked, and it's my cum—doesn't feel dirty at all. But her going this far to accommodate me? That's just another reason I could never give her up.