Birthday Gift
Even after I came, we kept tangling our tongues for a good while before finally pulling apart. Her eyes showed not even a speck of defiance. Her lips, soaked in saliva and refusing to close properly. Her breasts, utterly defiled with thick, sticky cum. This wasn't relief. It was just fuel for an even greater arousal.
"O...ppa. You're in heat again... aren't you? Your eyes are scary..."
"...Yeah."
"Seriously... you have way too much sex drive..."
My sister swallowed hard as she stared into my eyes, then started peeling off her panties on her own without me even asking. I savored the sight of them sliding down her hips, past her thighs, knees, calves, and finally off her ankles. Then I pounced on her from above once more.
"No... don't..."
"You took them off. What's the problem?"
"Not on the sofa... the bed..."
"You like the bed better?"
"The bed lets me stick to you even closer, Oppa..."
I couldn't wait even a single hour. Besides, the bed made it easier for me to pin her down completely. The moment she answered, I scooped up her naked body in both arms. When I slipped my hand under her knees, she wrapped her arms around my neck like she knew exactly what was coming and clung to me.
I hesitated for a second—which room?—then headed for the one that smelled more intensely of her. I wanted to her room with my scent too.
"...Spread 'em."
"My legs...?"
"Spread them so I can slide in easy."
I tossed her onto the bed and climbed right on top. My cock was heaving like I hadn't just cum, but I held it back and watched as she parted her thighs to either side.
"Um... Oppa...?"
"I said spread wide so I can get in easy. You're just spreading your legs—what's up?"
"It's... embarrassing..."
"I'll kiss you if you do it quick."
At the word kiss, her face flushed bright red, and she obediently spread her pussy wide with both hands. Her lewd slit, still coated in my cum. It wasn't even closing properly anymore, let alone looking neat. Most of it had leaked out, so I needed to leave my mark again.
I hooked one of her legs over my shoulder and sat on the other. Then I thrust my cock deep into her soaked, ready pussy once more.
"Eek... O...ppa..."
"Oppa?"
"D-darling Oppa... it's so deep..."
"You said you love it when I go deep."
"Yeah, but haah... ngh... this feels weird..."
Maybe because of the deep angle, she was already panting raggedly and reacting so lewdly, even though I wasn't pounding her that hard yet. Her breasts jiggling with every thrust, glistening slick with my cum staining those huge tits, her face melting into a gooey mess where she couldn't even hold my gaze anymore—it was all so lovable.
"Haa... ngh... O-ppa... kiss..."
"You keep calling me Oppa?"
"D-darling Oppa... kiss me, kiss me please..."
"Wanna use casual speech?"
"Kiss... kiss... kiss... Oppa, darling Oppa, Master, please kiss me, kiss!"
I gripped her legs and fucked her with loud, wet slaps, and soon my adorable little sister was desperately begging for kisses like a spoiled child throwing a tantrum. It was so insanely cute that I switched positions and showered her with kisses.
"Mmph... prh... haa... Darling Oppa... so good..."
"...You like me that much?"
"Haah... heuk... love Oppa... kiss... more... more please..."
I lowered the leg on my shoulder, mounted her fully, and kissed her to my heart's content. She clung to me with her whole body like she couldn't bear to let go even for a second, lips glued to mine, acting all coquettish. She'd dropped even the pretense of resistance like usual, just giving in to instinct, craving my affection. My brain, pickled in blind love, couldn't hold onto reason either.
"Haa, fuck. Kim Gyeo-ul. Baby, I love you... You're mine forever. You're mine, right?"
"Haah... ah... y-yes... I'm yours, Oppa... I'm darling Oppa's..."
"Hoo... Kim Gyeo-ul, I wanna defile you so bad. Mark you as mine..."
"Hng... ngh... yes... defile me more, Oppa only... leave your marks please..."
She couldn't hold her head up at all, trembling and clawing at my back hard enough to leave scratches every time I kissed her. Even when I slammed into her cervix—which usually hurt her—she just let out those melting moans, completely unraveled, no trace of reason left as she spoiled herself on me. It was thrilling.
"Heuk... haek... Darling Oppa... hold me..."
"Hold you?"
"My clit... and womb feel so weird... haek... so weird... Oppa..."
"..."
"K-kiss... hng? Eek, haa... hold me while you kiss..."
She couldn't even move her body on her own anymore, just instinctively bucking her hips, then clung tight and begged desperately. Like the pleasure scared her, leaning on me. I couldn't let my possession break, so I stroked her hair and slowly stood up with her still impaled.
Standing, I rocked my hips slow and sticky, but even that left her too drained for kisses—she just buried her face in my shoulder. But when I tilted her chin up for a kiss, her tongue still worked, licking my mouth thick and deep.
"Haa... fuck, Gyeo-ul... wanna cum inside. Can I?"
"Nooo... don't wanna..."
"What's no?"
"Haek... heek? Ah... l-like this it'll leak... out..."
"..."
"Haah, hi...ngh... pound me from above... please..."
She could barely breathe with every thrust, but she wanted me to defile her that badly—begging me earnestly to ruin her. I didn't refuse. I pinned her to the bed again.
"Heek? Ah? Haah, hng...!"
"Haa, fuck Kim Gyeo-ul... love you so fucking much. Wanna knock you up. Don't take your pills, fuck..."
"Haek, hek... Oppa... ha? Heut... love you... make a baby please..."
Beastlier than beasts. On my knees, folding her thighs, mounting her and crushing her womb raw with instinct.
"Haak, haa... defile me... with your... big bro cock... make your lil sis yours..."
"F-fuck... Kim Gyeo-ul... love you so much..."
"Inside... cum inside... love Oppa's... haa... ngh!"
Our ugly desires—to defile an alluring female, to be defiled by a superior male—mingled until I flooded her irreversibly, overflowing so much the bed soaked through. The endless orgasm nearly made me whimper, but she writhed and glued her lips to mine, saving me from that.
"Hoo... ugh..."
"Haa... ngh... Darling Oppa..."
"...Rest a bit, then more?"
"Defile me... more please..."
Now completely obedient to me. Until reason returned days later, I wanted to paint her in my colors over and over.
"Seriously... Oppa, you're too much..."
"You clung to me too."
She'd been sulky since waking, smacking my arm again. ...Yeah, even I thought it was a bit extreme. We'd gone at it nonstop until she collapsed from exhaustion. My cock ached like hell from pounding till it hurt, and eventually she went limp, just licking my tongue. Even half-unconscious, she wouldn't let go of the kiss—it was so cute that I gave one last weak cum and crashed spooning her. I lost count. Not over 10... probably. But definitely the most ever. My dick and balls throbbed painfully. But the happiness and satisfaction drowned out the pain by miles. I never knew anyone could love me this much. Even after exhausting every drop of lust, lying naked and chatting like this felt blissful. This final day outshone the previous 364 combined. Hell, my whole life.
"Even so, doing it that hard here could've broken something... Look at all the marks."
"You begged me to pound you. You asked for the marks."
"...Still, you could've gone easier!"
Neck, nape, shoulders, upper chest, underboob, collarbone—everywhere I'd bitten and sucked was covered in hickeys. I had scratches too, and the sheets were soaked beyond salvaging. ...Her pussy too, but we'd cleaned up, so it was okay now. We woke up to evening. We showered together—no morning wood, but no more rounds. Any more and we'd both break.
"Your formal speech was such a turn-on, though."
"...Stop, seriously."
"Spoiling for your big bro felt that good?"
"Stop it! ...Embarrassing."
"Say 'darling Oppa' one more time. Sounded so good."
"No way. How am I supposed to call a total perv trash bro 'da... darling Oppa'."
"You said it fine before. Why pretend now?"
"...Once was enough."
Did the words change her thoughts, or did they just unlock her instincts? Either way, that clinging was her true nature. ...Just like pinning you down is mine.
"...Gyeo-ul."
"...Yeah."
"Let's hold back from now on. ...Honestly, the upstairs and downstairs neighbors probably heard everything."
"..."
"I won't give you up if we get caught. But we can't get caught."
"...Yeah."
"Next year, part-time together and sneak off. Hotel—no one'll hear."
"If you can hold out, sure... but can you really?"
"...If I can't, I'll sneak over at night. Like last time."
"Like last time? Sneak while your lil sis is sleeping? Saying it so boldly..."
"...I meant something else. Not sneaking sex. Don't treat me like a creep."
"That's creepy too, seriously..."
Grumbling, but not telling me not to come. Same old her. Just extra clingy earlier. Makes me want to cherish it all the more—every side you show.
"...Gyeo-ul, wanna take a pic?"
"...A pic?"
"One before the year's out. ...Every birthday. Compare at year's end. See how much we aged. Gained or lost weight."
"Right now it'd be super lewd. No clothes."
"...Doesn't matter. Just for us."
"If it's just us... do whatever, Oppa."
...Be more honest like earlier. Should've made her keep the formal till year's end. Let her off for blushing, and back to this. Still cute, though.
We got up, handed her my phone, and headed out. In front of the full-length mirror in the master room, I hugged her from behind, facing forward. ...Damn, we look hot like this. Lust sated, no dirty thoughts, but our bodies are killer. Genes? ...If not siblings, we could've flaunted it. Nah. If not siblings, you wouldn't love me. Worth it.
"Oppa, taking it."
"Pose good like this?"
"Yeah. Otherwise your flab shows. Gross."
"Yours'll show clear as day."
"...Whatever. Just us seeing it."
We snapped the year's last shot, stuck together sweeter than honey. ...Same next year. And the year after. Ten years on. Even thirty years later, wrinkled and worn—snap and compare. Damn, we were hot then. Now I'm a grandpa. Time's cruel, huh? Yeah, I was gorgeous back then, Oppa. Still am, of course. Imagined her old and wrinkly, but her vibe wouldn't change—still cute.
"...If this pic gets found, we're screwed, Oppa."
"Lewder than last time. Super hot. Send it to me too."
"...So you can jerk to it."
"How'd you know?"
"Well... if you're jerking... better use my pic. I'll send."
"...Thanks."
Till that day comes—and after—I wanna live with you. No matter what anyone says.