68. Birthday Gift: Can't Hold Back When It's Just Us Two
In a situation where we were finally alone, there was no way I could hold back. Even a single moment apart felt too regrettable. Sure, we'd almost gotten caught, but in the end, we hadn't. My cock was still rock-hard, painfully stiff, so after rubbing it briefly against her ass, I shoved it right back in without hesitation.
"Oppa... you're hard again?"
"Yeah."
"What if Mom comes back? Hnng..."
"...She won't."
I devoured my little sister's skin with my palms like some gluttonous beast. Starting from her navel, I slipped my hand under her T-shirt to knead her breasts to my heart's content, while my other hand bypassed her useless panties to rub her clit like a massage. There was no excuse for it—I was toying with her entire body and violating her pussy. It was obscenely lewd, but she accepted my touch without a hint of refusal.
"Oppa, you're totally crazy... groping your little sister like this..."
"...You said you like it when I do this."
I bit her shoulder through her T-shirt, gnawed at the nape of her neck, then licked it. I buried my nose in her hair, inhaling the shampoo scent deeply. My hands roamed her body, stroking her skin everywhere, until they found their place, gripping her massive tits tightly. My cock plunged deep into her unprotected depths without a condom, and the more shamelessly I sated my lust, the more her insides clung to me, as if welcoming her big brother.
"My tits... hnng, it feels too good..."
"You like kissing too."
"Mine's pure... haah, innocent... pleasure... but yours is just pervy..."
Her voice was anything but pure—filthy, stirring her big brother's lust with that slutty body of hers. She always acted like she was the only good one, so this time I hooked my arm around her navel and yanked her hard.
"Eek... no, Oppa..."
"You said being forced is your kink."
"Yeah, hng, haa... but not that..."
"It's okay to do it?"
"Not there... rubbing and pressing... no..."
Like before, she overlaid her hand on mine, desperately explaining her weak spot as if to say not there, resisting. But contrary to her words, her pleasure-addicted body writhed wildly, reacting to my cock as if begging me to accept it.
"Why? You love it."
"My waist feels weird... it's moving on its own..."
She twisted her hips every which way, grinding her ass back as if desperate to feel more of my cock, pressing my hand harder against her navel—pushing it inward—despite her pleas for me not to. The exact opposite.
"Ha... fuck. Kim Gyeo-ul."
"Opp...pa... too soon..."
"...Gyeo-ul-ah."
"K...kiss... haa, hng, ah, haa!"
Even as she desperately begged for a kiss like always, she couldn't turn her head, her hips bucking on instinct—then suddenly, she started moaning terrifyingly loud. She'd hit her orgasm limit, her walls clamping down irregularly on my cock, pressing my hand so hard it felt like her guts would squish. I matched her lewd movements on instinct, pounding into her spasming pussy like an animal until I dirtied her insides once more.
We'd moved so violently that even the blanket had come off, leaving us far more exposed than before.
"Hoo... Gyeo-ul-ah."
"..."
"...What, are you crying?"
Once my heightened arousal had somewhat subsided, I'd meant to kiss her. But maybe because it'd been too intense, she looked up at me with teary eyes and a pissed-off expression, then turned her head away.
"...I said... kiss me... but you didn't keep your promise..."
"..."
"You're really bad... mmph..."
Blaming me with that sulky, hurt whimper just for not kissing her—it was so cute my cock threatened to burst back to life. I stole her lips just once as she wanted, then pulled back briefly. Seeing her anger soften a bit from that light kiss wasn't enough. I pulled out of her pussy and turned her body toward me. This time, I tangled our tongues deeply until her anger fully melted away. We parted for a breath or two, then tangled again. Breathed, then I bit her lips. Next, our tongue tips rubbed together. After five rounds until we both hit our breathing limits, she melted completely, pouting cutely at me.
"P...ha... Why didn't you kiss me earlier?"
"You were out of it and wouldn't turn your head."
"That was 'cause... I was cumming, pervert. It's still your fault."
"So I did it now. Didn't like it?"
"..."
I stole another kiss from her lips as she always dodged questions with a head shake. Maybe annoyed at being on the receiving end, she stole mine this time. I wondered how long this would go on and leaned in for one more, but she buried her face in my shoulder, robbing me of the finale.
"...Hehe, I win."
"Win what?"
"The one who gets the last kiss wins."
"Says who that's the last one?"
"...Oppa, aren't you tired? Take some pills or something?"
"I do take my vitamins."
Emotions ran too deep to stop after one. Opportunities like this were rare, and clinging to her like this only fueled the urge. We held each other for a long while, just breathing. Once our breaths steadied, she spoke first.
"...Hey, Oppa. What if we'd gotten caught earlier?"
"Don't wanna imagine it."
Honestly, my heart had felt like it was splitting open. If we hadn't had the blanket, or if Mom hadn't just popped in briefly but canceled her plans. If she'd forgotten something else and come back again. I didn't even want to think about the disaster that would've unfolded. ...Was that horrific future not so far off? Holding her in my arms now felt even more satisfying, more blissful. I didn't want to consider any other possibilities.
"Me too, but... it wouldn't have been weird if we had. No blanket, and we'd have been busted for sure."
"...Let's not do this again. The living room feels too risky no matter what. From now on... only when it feels safe. Sneakily."
"Says the oppa who came buckets inside his little sister during the risky part?"
"I'd use protection if you asked, but you never say a word."
...Of course, that's how it was until recently. Now, even if she begged, I wouldn't. Still, it'd be nice to hear her ask for a condom sometimes. Ignore it, force myself on her anyway, then shower her with kisses after to soothe her. I know it's trashy... but it's so fucking cute and hot.
"Condoms can break sometimes... Pills are safer."
"You don't even ask me to pull out."
"That's... 'cause... you like it."
"Like what."
"You're hardest right before you cum... and you cling to me the most. ...After you cum, your... cock... trembles so much."
"...Want another round?"
"Ah, no, not now. ...Just a little break."
"Why should I listen to you?"
"...It's my birthday. My waist won't move right, so let me rest a bit..."
She clung to me, whining about how hard it was to move, and I wanted to ravage her anyway—but it was her birthday, so I held back. ...Gotta give her the gift too.
"...Here. Your gift."
"What? Suddenly?"
"Did you think I wouldn't get you a birthday present? ...It's a necklace, so take it."
After cleaning up a bit, I handed her the necklace I'd hidden in the room. I don't think of myself as a guy with great taste, so I went with something safe: a snowflake design. It looked pretty, and it fit Winter.
"...How is it?"
"Don't ask about every little thing."
"What, you can't accept a gift from me?"
"No, it's not that... Oppa, don't you know about atmosphere?"
"What atmosphere."
"..."
She unwrapped it, beaming at the gift, but shot me a look like you don't even know this? when I asked. Then she clamped her mouth shut and fiddled with her collarbone, like her throat was dry. ...Even an idiot like me got the hint.
I took the necklace back from her hand and clasped it around her neck myself. For once, she looked purely delighted, like an innocent girl.
"...Thanks."
"..."
"What. I finally said thanks."
"...Just... whatever."
"You're the one who gave the gift—don't get embarrassed. ...You're making me embarrassed too."
"Seeing you go from that earlier to acting all innocent and happy... it's just a bit much."
"Who's innocent? I'm not a kid."
"True."
The awkward vibe vanished in an instant as we grinned at each other. ...Bought the perfect one. It suits her so well. Should've given it sooner and not forgotten.
I shifted my gaze from the snowflake pendant to her eyes, staring deeply, and our lips met naturally, without anyone initiating. This time, it wasn't lewd—just a soft kiss. We pulled apart and gazed at each other tenderly.
"...Thanks for the gift, Oppa. So, I'll grant you one wish."
"Say that to me carelessly, and you're asking for trouble."
"If it's weird, pretend I didn't say it."
"That wouldn't be granting a wish."
"It's my birthday—can't I do what I want?"
That smile, eyes crinkling as she met mine straight on. The word beautiful was made for it. ...What to wish for. She'd probably say yes to most body-related stuff anyway. Let's try something else.
"Then... speak formally to me until the end of the year."
"...Formally?"
"It's not weird or anything. This much is fine."
"Why suddenly?"
A little sister speaking formally to her big brother isn't strange. ...Even if I'm asking for weird reasons. Honestly, that confession on Eve stuck with me. It'd be creepy all the time, but occasionally? Sounds good.
"You've been so cheeky lately. As a lesson in respecting your elders, no more casual talk with me."
"When did I ever talk casual to you?"
"You did."
"...I did, yes."
"Good job."
"You're such a total pervert... Oppa."
It was still awkward, not quite natural, but my little sister—dyeing more and more in my colors—was so irresistibly alluring I wanted to corrupt her forever.