Curiosity
A crisp March morning.
"……."
In the end, nothing happened yesterday.
It had gone down far faster than I'd expected.
"Honestly, what does it take to make it go down?"
"You'd know better than I would, sis."
"…Just this once."
I'd been secretly hoping for a scenario where it just wouldn't go down and she'd have to take care of it for me — but no such luck. Maybe it was the nerves, but the second it softened even a little, it went completely soft. Not that she would have actually pulled it out for me even if it hadn't. What the hell was I fantasizing about?
"……."
But whether it's romance or a celebrity scouting offer, the big chances always come when you least expect them. Miss the moment and you might never get another one.
And that moment was right now.
"Did you… rub against me on purpose?"
"Of course not…."
Apparently my morning wood had woken her up. I'd been asleep, so I hadn't felt a thing — but my cock had been pressing into her ass, and when she woke up because of it, she shoved me awake with her hips. Which left us in this exact situation.
"Then you should've just gotten off the bed."
"I still wanted to sleep. If I get up now, I'll be wide awake."
"Unbelievable…."
I understood wanting to sleep in — it was Saturday — but if that was the case, she shouldn't have brought it up in the first place.
"Fine, then I'll leave."
"I don't want that either. It's cold."
"Then what am I supposed to do…."
"Figure it out."
"……."
I'd love to. But the entire time we'd been talking, it hadn't gone down at all — and now it was being pressed flat against her. Stay like this and it would probably just stay hard. Even shifting my hips a little only made me feel a weird surge of pride about how big it was, which didn't help either.
That was when I felt it.
The chance was now.
"S-Sis… could you… take it out… for me."
"…A-Are you insane?"
She spun around, completely stunned. I flinched and looked away on pure reflex.
Fantasy and reality really were different. Not a single part of this matched the scenario in my head. What chance? This was no different from some pathetic loser mistaking a moment of kindness for interest and blurting out a confession. Running full speed into a wall. I wanted to die.
This wasn't just a failure — it was the kind of irreversible act that could tip over into something criminal.
But losers always talk too much. I made one last desperate push.
"This only happened because you keep insisting we sleep together in the first place."
"Th-That's…."
"You live alone and you don't even go out to meet anyone. When I say I'll sleep somewhere else, you dig your heels in and say you're sleeping here. And even now, all you do is keep testing the waters. I'm a guy too — I need to get off somehow, but I've got nowhere to put it, so this is what happens."
"Okay, just stop… I only said that because I was startled…."
"……."
I said all that, but my voice was shaking for no good reason. She hadn't done anything wrong. I was the one at fault for lusting after my own sister. If she decided to take legal action right now, I wouldn't have a single word in my defense.
"Then… what am I supposed to do."
"What do you mean, what. Get out."
"Wait—"
I left my room, took a shower, and tried to calm myself down. Looking at her made me spiral over what I was even supposed to say. Maybe I should be the one to move out this time. Her place was empty — maybe I should just go live there.
"……."
When I came out, she was crouched in the living room on her phone. After our eyes met for a second, neither of us said a word.
Knock knock knock.
Mom's knock at the door. A weak, exhausted knock that carried the full weight of her business trip.
I got up right away and opened the front door.
"Mom, you're back?"
"Yeah… ugh, I'm so tired…."
"Have you eaten?"
"Yeah. I ate what you left for us."
We'd eaten separately, actually. I'd had the kimchi stew Mom made. Sis must have eaten at some point too — there was a cup ramen container on the sink that hadn't been there when I ate.
"Good boy. Anything you want to eat?"
"Pork cutlet."
"I figured you'd say that, so I bought some~"
"Yes!"
I unpacked the bags Mom had brought and put everything where it belonged.
"Hey. Don't sleep in the living room — go sleep inside. It's cold out here. What are you doing?"
"Mm…."
Apparently she'd had nothing to do during the day and had eventually fallen asleep. Her door had been closed, so I hadn't even known she was out here.
"Son. Your sister won't get up. Go wake her for me."
"……."
What if the second she opened her eyes, she told Mom I'd stabbed her with my dick?
"Wake up."
I shook her awake, half terrified.
"Either sleep in your room or put a blanket down out here."
"Mmngh…."
"……Or sleep in my room."
"……."
She nodded, got up, walked into my room, and lay down. Mom asked if she wanted to eat, but sis was already gone to dreamland.
"I think I need to go to bed early… I'm exhausted."
"Yeah. Sleep well."
"You too. Don't stay up too late."
"Okay."
We hugged goodbye, and Mom went into her room. I finished getting ready for bed and dove straight into game mode.
Sis was still occupying my bed, sound asleep.
"Haa…."
A sigh that came from deep in my gut — the kind you let out when you've been losing so hard you're genuinely pissed.
"I'm sorry…."
She must have heard it and woken up, because she apologized to me.
"Huh? No. I'm not mad at you. It's the game."
"Really…?"
I deliberately treated her like nothing had happened.
"You up? Go back to sleep."
"I thought you hated me sleeping in your room."
"…It's fine right now."
"Then I'll go wash up."
"Okay."
I lay down in the spot she'd just left. Her body heat and her scent hit me all at once. After what happened this morning, I'd been sure I'd end up hating her — but right now I felt nothing of the sort.
I really am a hopeless sister-complex case, aren't I….
And she was the same. She hadn't said a word to Mom. She'd even declared she was coming back. A normal person would have avoided my eyes and left. Maybe she had a brother complex too, and the only reason she kept putting it on me was because she was afraid of looking like a freak if she made the first move.
Then again, I'd been through plenty of embarrassing situations myself and just toughed them out, so maybe she was thinking the same th— no. Forget it. It was already too late. Hands off.
Why are guys so dense even when they're getting signals this obvious?
I was a guy myself and I still didn't get it.
"Are you… really okay with sleeping together…?"
"Yeah, it's fine."
Once she confirmed I'd deliberately left her space open, she slipped into my arms. The scent of the same shampoo we both used tickled my nose in a good way. She'd showered too — a soft pink fragrance mixed in with it.
"You're facing this way today…?"
"Just… more room like this."
Thinking about it, sleeping turned away meant bending at the waist, which made your ass stick out and actually took up more space. Same logic as wearing a backpack on your front in the subway. That was the only reason I'd chosen this position.
…And if I could see her chest, that was a bonus.
"Then I'll sleep like this too."
"Suit yourself."
Her V-neck still wasn't doing its job today, which confirmed it — no bra.
"……I can't fall asleep."
"Of course you can't, sleeping like that."
She'd napped so well during the day and then slept so deeply on the bed — it was weird that she was still drowsy.
"Do you work out?"
She put her hand on my chest as she asked.
"Home workouts, yeah."
"Really?"
Going to the gym was a hassle to begin with, and I was afraid that once I went, they'd strong-arm me into signing up for personal training. So I'd never been. I just stuck to the conditioning routines I'd learned in the military.
"Flex your abs."
"Hup."
"Oh… you've got some definition."
"Obviously. A guy should at least have this much."
It was embarrassing to say out loud, but I did have enough of a six-pack to show off if I ever needed to.
"……Stop poking. It tickles."
"O-Okay. Sorry."
She kept jabbing at my abs with her finger. Maybe because of what happened that morning, she stopped pretty quickly.
My body, however, did not stop. My pants started tenting a little.
"You okay today…?"
"About what."
"You know… your sex drive?"
"I'm fine. I took care of it while you were sleeping."
"Just now?"
"No, you crazy woman — earlier today. Mom's home, what the hell are you saying…."
I'd handled it alone in the bathroom during the day. Maybe because it'd been a while, the cum had stretched out in a long string on the floor. People said cumming on the bathroom floor would clog the drain, but once should be fine.
"Hey, sis."
"Yeah?"
"Why are you so interested in my sex drive? You already know everything there is to know."
"……."
This time it wasn't about seizing some opportunity. I was just genuinely curious. Ever since Dad died, situations like this had come up more than a few times, and every time she'd just let it slide. No — she'd looked at me with eyes full of curiosity.
The same way I kept her chest in the corner of my vision while deliberately focusing somewhere else, she kept my cock in the corner of hers. The classic technique for looking at something you weren't supposed to see.
"…Because I'm interested too?"
"……."
"I'm surprisingly perverted, you know?"
"I didn't ask…."
She was putting on that deliberate cool-girl tone. Zero sincerity. People who talk big like that usually go completely mute the second they're actually in the situation — or they just leave. She'd done the same to me.
"……But are you actually interested?"
"……Yeah."
The atmosphere started drifting somewhere strange again. Maybe it was because my cock had gone fully hard the moment I heard her say she was interested. Her eyes kept flicking between my face and below.
"Then… want to see it?"
"What…?"
"I'm not joking this time… for real."
I seized the chance again. I'd heard somewhere that sometimes you have to be bold if you want things to move forward. So I went for it.
This time, she didn't run.
"I already saw it… last time."
"You didn't get a good look."
The way even people who constantly scream about wanting to have sex start second-guessing themselves the moment it's actually on the table — both of us were doing the same thing. Doubting whether this was really okay.
"Are you sure it's okay for me to look?"
"Are you sure it's okay for me to show you?"
"……."
"……."
But those doubts resolved themselves through each other's questions. It became a well, I'm fine with it if you are kind of situation. Since I'd asked last, she was the one who spoke first.
"……Yeah."
At that answer, I took off my pants. My cock stood tented long and hard, pointed toward her. Warm heat rose in soft waves toward both our faces.
"I-I'm grabbing it, okay?"
"Yeah…."
After a brief hesitation, she finally wrapped her hand around my cock — over my underwear.
"How is it…?"
"I-It's warm."
The first impression of a sister touching her little brother's cock for the first time in her life.