The Sister's Confession
The younger sister clung to me stickier and stickier, as if she were in heat. Huff—huff— She refused to peel herself away from my chest, as though she couldn't bear to miss even the faintest trace of my scent.
"...You'll only smell sweat if you keep sniffing."
With my strength drained, I let her lean against me until my back met the wall. "I like every smell on you, though~ So~?"
Before I realized it, her hand had slipped inside my pants. "How much did you think about me today~?"
That slurred, teasing tone that drove me insane. She rubbed my still-soft cock over my underwear with eager fingers. "You're wearing different clothes."
It wasn't the usual tank top and dolphin shorts. She was dressed like she had gone out— a tight black short-sleeve crop top. The cropped length exposed the navel that had been smeared with my cum yesterday. The equally tight jeans gave a fresh sensation every time they brushed against me. She knew exactly what she was doing; she lifted her knee and ground it slowly against my lower body.
"Don't like it~? Doesn't suit me?"
Of course it did. Proof of that was the way my cock, which had been hanging limp moments ago, was now standing stiff and twitching against her knee. It had swollen painfully inside my underwear in an instant. Still pinning me to the wall with her sticky gaze, Ai kept rubbing with both hand and knee.
"Or is it because your little sister is wearing clothes you've never seen before, so you're even hornier...? Thinking about how badly you want to fuck me senseless... right...?"
She whispered in that familiar, shameless tone, trying to seduce me without a shred of fear. "Weren't you tired...? You came so much yesterday morning... and you haven't cum even once today... How did it feel holding it in when you usually shoot every single day...?"
I had been distracted by other hardships outside, but if I said that, she would probably sulk. Still, she was right. The moment I recalled the pleasure my cock had grown accustomed to over the past two days, it trembled with anticipation.
"I already knew the answer... I knew you'd rather fuck me than eat or shower... I asked even though I knew..."
That was the limit. I grabbed her face and shoved my tongue straight into her mouth.
"Mmph...!"
Her lips, which had reflexively closed in surprise, slowly parted and warmly enveloped my tongue. The sticky, sweet sensation made precum soak into my underwear. When I pulled away, Ai was already panting, eyes moist, unable to even wipe the saliva trailing from her lips.
"Let's go to my room."
Ai swallowed and nodded.
...The moment we reached the room, we tore each other's clothes off in a frenzy. Without a single word, we rubbed each other's genitals with our hands, slowly becoming naked.
"You're wearing underwear...?"
Until yesterday she hadn't worn panties or a bra, but now her body was covered in matching black lace lingerie. "Hehe, does it suit me...?"
"It makes me so fucking horny. I want to fuck you like a dog."
Delighted by my answer, she pressed her lips to mine as if she wanted to suck the life out of me. "Oppa, doesn't your cock hurt...? It must hurt... Poor thing... twitching like that..."
"It hurts. Will you take it out for me?"
Ai bent down as if she had been waiting for those words and pulled my pants down. My cock sprang free, the tip already slightly wet over the underwear, throbbing. "Wow... it's gotten so big... Looks delicious..."
"It probably smells. I've been working all day."
"How did you know I love the smell of cock juice...♡ Eh—"
She stuck out her tongue and gave the precum a few light licks, tasting it. While being completely naked was nice, there was something uniquely erotic about the contrast of the sexy lingerie against her pale skin.
"It's different. Good. Ngh, you'd look good in anything because you're pretty... hah..."
Every time I spoke, she rewarded me by licking faster, drawing a moan from me. "Hehe... you like it...? Say whatever you want... I'll do anything..."
She looked extremely pleased by my reaction. The sight of her smiling up at me from below flipped a switch inside me.
"Then how about we try something different today?"
"Mmhm~ What should we do...? What do you want...? I'll do whatever you say... Hurry...♡"
Her urging made me want to tease her more. A good idea came to mind.
"Do you masturbate, Ai?"
I asked the mischievous question.
"Eh??"
Her eyes widened in genuine shock. Teasing her was going to be fun.
"Why are you so surprised? Masturbation. Do you jerk off?"
"Uh? Uh...? U-um...?"
Her previously relaxed face flushed bright red in an instant. "Answer me. Have you ever masturbated, Ai?"
I urged her the same way she had urged me. I pulled my underwear all the way down and pressed my cock against her face. The blush on her cheeks from the earlier question felt pleasantly warm. While I rubbed my cock against her small face, her lips finally parted.
"I have..."
The sound of her swallowing. It wasn't just because of the question. She looked aroused by the smell of precum wafting from my face.
"Oh, when was the last time?"
I kept asking without stopping my hand.
"...Always..."
"What?"
"Today... I did it today..."
An answer I hadn't expected at all. Today...?
"...Around what time?"
"Right after you left... in this room... sitting on the bed over there..."
Even while embarrassed, she answered every question obediently. It was unbearably endearing.
"What did you use?"
"Underwear..."
Come to think of it, I had forgotten to put it in the laundry basket. The underwear I had left in the room was lying beside the bed.
"Aah, really? How did you do it?"
"...While smelling it..."
"Haha. You're such a pervert. You're a fucking lewd girl, Ai. The cum smell must have been strong."
She stayed quiet, eyes lowered, without answering. Of course, my cock was still being rubbed against her face the whole time.
"I wasn't even gone for nine hours, and you couldn't hold back so you jerked off while sniffing someone else's panties?"
"...Yeah..."
Her voice had shrunk. She always reacted so well that she ended up in this situation.
"Show me. How you did it."
"Eh???"
Her voice jumped. She shot upright as if startled. "I want to see. Show me how you masturbate. Do it exactly the same way you did when I wasn't here."
"Eh...? Without having sex...? Just by myself...? Without putting it in...?"
She looked slightly disappointed. I leaned in close to her ear and whispered the way she always did.
"Want to jerk off while facing each other? Then shove into each other what we used as jerk-off material... Just imagine it... The cock you've been drooling over finally being pushed inside your pussy..."
"Uhet... het..."
She trembled and moaned every time my breath touched her ear. This was extremely effective.
"You taught me yourself. Start small and work up to something bigger. How about it...? Feels good, right...?"
"Yehe... yeah..."
"Let's do it right now. Take off your underwear."
At my words, Ai immediately stepped back and began removing her panties with impatient hands. "Haha. You look like a whore, Ai. You strip the moment I tell you to."
"...Because I decided to obey everything you say..."
She didn't get offended even by my vulgar words. Maybe because she already knew my sadistic tendencies. She seemed to believe without doubt that it was all said out of affection. Still, her embarrassment had clearly increased.
Beyond the removed underwear, Ai's legs were fully exposed. Sticky love juices were flowing down her thighs from between them. "Show me your panties."
"...Yes..."
Ai held the panties between her fingers and spread the part that had touched her pussy so I could see it clearly. Just like I had leaked precum, she seemed to have been dripping transparent fluids nonstop. The sight of the damp underwear made my cock twitch up and down.
"Want to sit on the bed? Do it exactly like you did earlier."
Ai obediently followed. When she sat down, her juices left a mark on the sheets. "Spread your legs."
I had given a similar command in this room yesterday too. But perhaps because the situation was far more embarrassing, she moved slower. When she spread her legs, Ai's smooth, hairless pussy came into full view. Already soaked, her entrance was twitching open even without being spread by fingers—whether from how wet she was or from how many times I had fucked her yesterday.
I stood a little in front of her and slowly stroked my cock back and forth. Ai kept glancing at it, unable to look away, but still hadn't started touching herself.
"What are you doing, Ai? We agreed to do it together."
"Hng..."
"It's the cock you love so much. You can use it as jerk-off material as much as you want."
Stimulated by those words, she slowly brought her hand down. Schlick—schlick— Ai rubbed her pussy with the same gentle hand she used when stroking me. Already thoroughly wet, her fingers slid without resistance as she gently rubbed the side of her mound. Once she started masturbating, her eyes never left my cock. With wide eyes, she stared at it as if trying to swallow it whole.
Schlick—schlick—schlick—schlick—
"Hah... hng... ngh..."
Her moans were smaller than when I was actually fucking her. Even that was cute. Using her twitching pussy and embarrassed face as side dishes, I increased the speed of my hand. Schlick—schlick—schlick—schlick—
As if responding, Ai also sped up the movement of her fingers. They grew slick with her juices. Lost in the sight, I brought my cock right in front of her face and stroked faster. Before long, she had inserted half of her middle finger inside herself and was stirring it around.
"Hah... kgh... hng... hi..."
Her moans grew louder. She no longer cared about shame; it seemed she had long forgotten how she looked masturbating to her brother's cock. She spread her legs even wider. With her legs lifted, the inside of the pussy she was fingering became clearly visible. I could vividly imagine the sensation of those tight folds. The pleasure of each ridge brushing past my cock was something I would never forget for the rest of my life.
If I grabbed her legs right now and thrust forward, she would accept me without any hesitation. But I didn't. Just like she said, holding back would feel much better.
While I was absorbed in masturbating, Ai had slipped her other hand inside her bra and was squeezing her own breast. Her face had gotten a little closer to my cock. This time it was her who had approached, not me.
"Het... hah... hng...!"
"Feels good, Ai? You like jerking off while looking at my cock?"
She was so focused she didn't even answer. She was simply devoted to moving her fingers, as if even blinking would be a waste, her gaze fixed on my cock. Between her squeezing fingers, a pretty pink nipple peeked out. It was the ultimate jerk-off material.
I, too, lost myself in stroking. The urge to cum rose quickly. The stimulation was far weaker than actual sex, but the taboo element acted as a powerful spice that made my lust surge.
"Ai... I'm gonna cum... Where should I shoot it? On your body or your face? Where do you want it?"
Schlick—schlick—schlick—schlick—
"My face... on my face... cum on my face, oppa... hng... hik..."
"You want a facial? Want your pretty face covered in cum?"
"Facial... hehet... I like facials... facial... ng... it..."
Schlick, schlick, schlick, schlick, schlick
"Got it, Ai. I'll cum a lot on your face. You have to cum with me too, okay?"
"Together, together... togeth—hik... hah... togeth—er..."
Both of our hands moved faster. Gradually we stopped speaking, focusing only on the pleasure and the sight before us. My vision went white. Watching Ai masturbate in the lewdest way imaginable, I shot the first thick rope of cum all over her face.
Spurt—spurt, spurt, spurt, spurt—!
The moment the amount that could cover her entire face landed on her, Ai seemed to climax at the same time. Finally tearing her eyes away from my cock, she threw her head back and squirted like a fountain. "Hehik! Eghit! E-ehi, he—"
She let out such vulgar moans that it was hard to believe they came from that pretty face, her spread legs trembling violently. Her transparent juices splashed lightly onto my body. White semen and clear love juices continued to flow from her pussy in contrast. But my cock was still rock hard. Neither of us expected one orgasm to be enough. The mutual masturbation just now was merely an appetizer before the main course.
Look. Even now, Ai had turned her head back and was staring at my cock again, veins bulging as if it were about to burst.