Insanely Obsessed
"Khhk—! Puhah!! Hnnn... See? I told you it'd go in..."
My sister spat my cockhead out of her mouth, the whole thing having been packed inside, and forced the words out between ragged breaths.
"It actually went in...? You still look like you're dying, though. You sure you can keep going?"
"...Yeah. We can't have sex right now, so... I want to train my mouth to take all of Oppa's cock, just like a pussy..."
So hurry up and put it back in—♥
The little bitch looked ready again, mouth hanging open, drool already running down her chin in thick strings. I had to play along — even if I had to push her a little, I needed to get her used to this fast.
"Going back in, okay...?"
Aang~♥ Haaup—
She swallowed my cockhead easier than before, cheeks puffing out, and looked up at me like she was signaling me to push deeper.
— Kuhhet...! Kahhat... Kuup...!
"Whoa... that's actually crazy."
It was like watching some secret of the female body unfold in real time. Past her lips, down past the inside of her mouth, the mushroom flare of my cockhead stood out in raw, obscene relief against her throat. And the squeeze — Jesus, the squeeze was no joke.
— Gehk...!! Khht! ...Kahht...
Something other than spit started spilling from her mouth — a faintly cloudy liquid, like her stomach was pushing fluid back up. I checked to make sure she hadn't actually died on me. Down at the other end of the couch, her lower body was still draped over the backrest, and her cunt was pouring slick in lazy, dripping strings. Still alive, then...
— Kheook.... Kahhat...! Puhhat! ...Cough! Khhk...!
She started slapping desperately at my thigh — couldn't breathe. I rolled my hips back and pulled out of her mouth.
"Uegh... Hnn... my throat's shredded... ...Oppa hasn't finished yet, right...?"
She wiped at the fluids running freely from her lips with the towel I handed her.
"Yeah... But you squeezed better than before. Felt pretty good."
"Really...? Then... do it again... You can be rougher this time. I can take it..."
Her face went red. She was looking at my cock like she wanted to devour it, mouth already open — waiting, hoping I'd handle her rough.
"Watch the teeth—"
I drove in. Shhk—!!
"Khhaat! Fuck, this throat-pussy feels insane!"
"Keheuk...! Mmnnh...?"
That little questioning sound — like she was asking if it felt good. I answered by burying myself deeper.
Shhhhk—!
My cock pushed past her throat and started carving a new path down her esophagus.
I couldn't see her face behind the pillar of my cock, but I knew exactly what she looked like right now — eyes rolled back, gastric juice and spit running down her chin in a mess.
Fwump!!
I'd told her I'd be rougher this time, so I pulled my hips back a fraction and snapped them forward, punching deep into her esophagus. I did it again. Three strokes, in and out — and her lower body started listing sideways off the couch.
I grabbed her ass in a hurry to keep her from sliding off. Then I buried my face between her legs and greedily sucked at the cunt that was already drooling slick all over itself.
— Fwt! Fwchuut!! Fwt! Pfft!
She started squirting like a water gun, like she was about to die of how good it felt. One look at her and I figured she actually might, so I dragged my cock out all the way to the head and let her breathe.
"Hah...!! Haaah! Haa pfhaaat—!"
The second she started gulping air I shoved back into her mouth and punched it all the way down to her esophagus again. Then I started pistoning in earnest.
— Kheeeek.... Up! ...Uup!! ..Kehuup!!! Kuup...!
I was only halfway in, but it didn't matter. Her esophagus was already clamping down on my cock like it was trying to milk me dry, demanding I cum.
As I snapped my hips I caught sight of her asshole twitching in time with her cunt. I was going to use that soon enough anyway, so I smeared her own slick over it and started rubbing the entrance open with my index finger, easing it wider.
— Mmn!! ...!!!
She started clawing at my thigh in a panic, like she was trying to tell me that hole wasn't ready—
Chik— chigeok—!
I didn't care what she wanted. I kept thrusting, and my finger slid right in.
Puchut—! Pushuut—!
My sister really was a walking incarnation of lust. The finger in her ass was enough to send her over — her cunt sprayed, and she pissed slick all over herself.
— Khuut...! !! ... ! .........
The wet choking sounds coming out of her suddenly stopped.
If I dragged this out any longer something bad was going to happen, so I kicked into a sprint and chased the orgasm down.
Shhk—! Shhgeok—! Shhk—!
"Khht...! I'm cumming!"
I dumped every drop straight down into her stomach.
Byurut—! Byururut—! Glk—!
"Khaah... Okay. That actually cleared my head."
I yanked my cock out of her throat-pussy in a hurry.
Kweeeeek—!
Oh, that's disgusting—!
The second I pulled out, the cum sitting in her mouth came surging back up in a thick, gluey flood. She painted her own face with it, then the floor. The couch, too, for good measure.
Fuck...
Yeah... I figured this was how it would go if we did it at home.
I looked down at my sister, sprawled out on the floor like a frog.
"Hweeee—"
A bitch whose only real use in this world was as a cock-sleeve...
I planted my foot on the belly that had puffed up just slightly with my cum and pressed down, taking my irritation out on her.
Ueegh—! Heeek—
A little later I dumped my wrecked sister in the bathroom, finished cleaning the living room, and was standing there drinking a glass of water.
"Auuu... I can still taste cum in the back of my throat..."
She must have come to. She walked out of the bathroom, freshly washed.
"You're up? How's your throat?"
"Nnh... just feels kinda... open? Wide open...? ...Ah! Why the hell were you touching me there earlier!!! What the fuck!"
Earlier...? Ah. She meant her ass.
"I'm gonna use it eventually anyway. Might as well loosen it up ahead of time."
"Eugh...! Still... actual penetration is a bit much... There's a lot I'd have to get ready first..."
"You squirted everywhere when I pushed my finger in, though. Felt good back there too, huh?"
"Fuck!! You perverted piece of shit...! I just... I thought I was gonna choke to death... and you kept thrusting..."
Her ears had gone scarlet and she was throwing a full-blown tantrum. Which, translated, meant it had felt that good.
There was something I needed to take care of before bed.
I unlocked my phone and set the entire conversation with So-jung to a hidden chat.
My sister would absolutely go digging the second I fell asleep — or the second I set the phone down anywhere, really. That much was guaranteed.
"Oppa~♥ Hurry up and come lie down~"
She was already sitting on my bed, patting the mattress with both hands, calling me over.
I lay down next to her and turned my phone on, figuring I'd watch some YouTube before passing out—
"Ah... what are you doing. Give it."
"Hold on..."
The second she saw my phone she snatched it right out of my hand. Her fingers flew, tapping and swiping, digging through everything.
"There's a new number in here I don't know...? ...Who's Yoo So-jung...?"
"I told you. The girl I got friendly with at orientation."
"So it was a girl...? ...This bitch is prettier than me...? Huh?"
"Ah, for fuck's sake... here we go again. We swapped numbers and I haven't even talked to her since. You're going to be seeing her constantly once the semester starts anyway, so try being a little friendly."
"...Haa. ...Sorry I got mad, Oppa... You know you're all I've got... ...You can never, ever abandon me... ...Got it?"
"Why would I abandon you. Any guy who ended up with a crazy bitch like you would be so pathetic I'd have to keep you myself out of pity."
"Ung! I'm Oppa's crazy bitch~♥ I love you, Oppa~!"
She burrowed into my arms and started nuzzling her face into my chest the way she did every night, rubbing against me like she was trying to leave a mark.
"Yeah, yeah~. Try getting along with her too. She seemed fine."
"...I'll try.... Mmn... chup, chuuup... chuup!"
She stole my lips again, the way she always did, and I fell asleep with her mouth on mine.
A few days slipped by, and before I knew it there was only a week left until the semester started.
Chuuup—! Chuuuk—! Kuup!
First thing in the morning, my sister had already swallowed my cock like it was the most natural thing in the world and was working me toward an orgasm.
Nnh... ever since that first blowjob — first deepthroat, whatever you wanted to call it — this had become the routine. If she woke up before I did, she'd just start sucking my morning wood like it was her job.
"Mmn— pfhaa—! ...Feels good, right, Oppa—?"
She was shaking her ass over my face, slick dripping off her cunt in fat drops. There was no way I was just going to lie there and take that.
Chigeok—! Chook—! ...Chururut—!
"Hnn—! Feels so fucking good—! ...Hht! ...Aheung—! ♥"
I mashed her swollen clit around with my tongue and sucked on it, three fingers pumping the inside of her cunt, while my other hand — slick with her own juices — worked her asshole open and started thrusting in.
"Euhyaat...! Cummiiing—!! ...Ji-yeonie's gonna cum—!! Oppa!! Finger me harder—!!"
— Pyuchut—! Pichuut—! Fwt—! Fwt—!
"Heeet—! Haaah— ...Aaa..."
"The hell are you slacking for. I haven't even cum yet."
I pressed my foot down on the back of her head, nice and firm, and made her swallow my cockhead again.
"Sowwyee...! Chuup—! ...Kuhuut...!"
Smack—!
I brought my palm down hard across the cunt that had already flooded like a burst dam.
"Kuhooooook—!!!"
It had to hurt. Didn't matter. That ruined, wrecked hole of hers was delighted — it sprayed slick in little jets, pssht-pssht, like a water pistol.
"Loose-cunt bitch! ...Smack—!"
"KoeEEEK—! Kuup!!"
That was the game lately — calling her a bitch who'd piss herself the second I rammed her womb, a filthy slut-cunt, whatever degradation came to mind, all while slapping her pussy. Every time I did it her throat clamped down from the inside with this insane force, and it felt incredible. One of my favorite plays these days.
"Fucking bitch, I'm cumming! Don't you dare spill it."
Byuruk—!! Byurut—! Byuruk!
After a long finish I pulled out. My sister did exactly as she'd been told — she sealed her lips, then slowly opened her mouth to show me.
KahaAAAum—!
She let me see the hot load trying to surge back up from the back of her throat, then closed her mouth and held it. It was already leaking a little from inside her nose. I nodded, giving her the go-ahead to hit the bathroom.
"Uup—!"
I watched her sprint for the toilet with both hands clamped over her mouth and her other arm wrapped around her stomach, and I snorted.
Then I unlocked my phone and pulled up yesterday's chat with So-jung.
[shy cat tightly holding hands]
[cat staring with sparkling eyes]
After that, So-jung had texted suggesting we meet around lunch at the station near where we'd run into each other at orientation.
The problem was my sister...
Alright then. What did I have to do today.
Tonight, I had to wreck that sister of mine so thoroughly she wouldn't be able to do a single thing until the next day.
With sex, of course.