The Tale of Seeing My Sister Masturbating (4)
I stepped into my sister’s room. It was impeccably tidy, filled with a faint, pleasant fragrance that seemed to cling to everything. I had wanted to come in here for a long time, so was it wrong to feel a quiet sense of satisfaction at finally getting the chance? For now, I shoved those stray thoughts aside and focused on the task she had asked me to handle.
She has way more clothes than I expected….
I opened the closet in her room. Clothes hung neatly on hangers while the lower section consisted of drawers for storage. It was nothing like my own room, where I simply folded everything that wasn’t an outer layer.
…?
Instead of searching for the slacks she wanted, I pulled open one of the drawers. Rows of underwear in every color lay perfectly arranged inside. Among them was the pink pair I had seen the other day.
Staring at the collection of nothing but panties brought back that story about the brother who stole his sister’s underwear.
As long as I don’t actually do anything….
Acting on my thoughts would be extremely dangerous. Like how the leaders of nuclear powers never press the button even though all it would take is a single click. So I decided to simply look. I burned the colors and patterns into my memory. It began with pink on the far left and ended with blue on the far right——
……Wait a second.
The pink panties on the far left were the ones I had seen the day before yesterday. She must have washed them and placed them on the left. A strange hypothesis began to take shape.
Is it arranged by the order they were washed?
If they were placed in the order of laundry, then the pair on the far right would be the ones she planned to wear tomorrow. Those were blue, made of smooth silk.
No way….
I stealthily brushed my fingers across the silk. The moment I pictured my sister wearing that blue set, a rush of heat surged below and I stiffened. This was actually driving me insane.
What the hell am I doing….
I despised myself for running this kind of experiment with my sister’s panties. Quietly grabbing the slacks, I closed the closet door.
I reached the station near my sister’s company and called her.
"Bathroom."
"Wait… um… you can’t come in here?"
"Of course I can’t come out, that’s why!"
"Why are you asking that?"
"The second stall from the very back."
“I brought the slacks, so what do you want me to do with them?”
“Of course I can’t go in there… Can’t you come out?”
It wasn’t even a building restroom; it was a subway one. No matter the reason, if I went inside now it definitely wouldn’t end with me simply getting slapped.
“……Which stall did you say?”
“Tell me quickly.”
I had no idea where that was since I couldn’t see it myself, but a rough description should be enough for me to figure it out.
“Excuse me… are you going into the restroom?”
“Yes? Why do you ask?”
I had been waiting in front of the restroom and called out to a woman who was about to enter. Thankfully, since it was tucked away in an alley rather than on a main street, loitering didn’t look too suspicious.
“My sister is in the second stall from the back… Could you please give this to her?”
“Huh? Oh~ Sure, I understand.”
The woman who agreed so readily appeared to be around the same age as my sister. After waiting a little longer, she came back out, followed by my sister.
“Ah, thank you so much~”
“No problem at all~”
My sister, now wearing the slacks, exchanged polite goodbyes with the woman. Once we were alone, she turned to me with a face flushed bright red.
“…Thanks.”
“But why did you suddenly change into pants?”
“……I had a meeting.”
“Ah… I see?”
I almost asked why she hadn’t told me sooner, but then I remembered what day it was and stayed quiet.
No way.
As far as I knew, her company didn’t have a strict dress code. You just had to look neat. If she had known about the schedule in advance, she would have left the house dressed appropriately from the start. The only reason she would have needed to change from a skirt to pants…
No way. It can’t be that.
“Put these in the washing machine for me.”
“Ah… okay.”
She handed me a shopping bag containing the clothes she had changed out of.
“Aren’t you late for work?”
“I already let them know, so it’s fine. I’ll buy you something delicious later.”
“You don’t have to.”
I carried the shopping bag with the skirt inside and headed home. Normally I would feel sleepy after wandering around on my day off… but I couldn’t let that happen yet. I still had things to do——
“…….”
Before lying down, I took the skirt out of the bag to put it in the washing machine. From what I remembered seeing that morning, it was a pure white tennis skirt that fell about three to five centimeters above the knee. But part of it was a different color.
“…….”
I had roughly guessed it, and sure enough, my prediction was correct. I had heard that sometimes it didn’t end with just one time. Looked like my sister was one of those cases. She had acted so angry earlier, yet she still went out wearing a skirt instead of pants. She could have at least worn black. She was making me think all sorts of weird things for no reason.
Damn, it keeps coming back to me.
Ha, what am I supposed to do? I wasn’t like this before. Every single thing my sister did now seemed strange to me.
“…?”
I finally managed to sink the rising jar of desire in my chest and placed the skirt into the washing machine. But the shopping bag didn’t only contain the skirt. There was also a pair of sage-colored panties with elaborate lace trim—thin around the crotch area. They had a design that looked almost like pantyhose with a line running down the center.
“Hold on.”
The fact that she had taken both of these off meant… surely my sister was right now….
This can’t be real….
An image of my sister wearing only the slacks began to form in my mind. Her small frame and large hips. If you simply unbuckled the slacks, everything would be freed immediately. It meant her pussy would be completely exposed.
“Haa.”
As if trying to shake off impure thoughts, I tossed the panties into the washing machine as well. A sudden burst of dopamine made my breathing grow heavy. This wasn’t why I had run her errand. Why did she keep making me see her in this strange new light?
No panties… no panties…!
It probably wouldn’t happen again, but if a situation like this ever came up in the future… I told myself I could legally touch her panties.
“You’re back?”
“Yeah.”
My sister returned home with a less-than-pleasant expression. I had secretly hoped for cheese sticks after she mentioned buying me something delicious earlier, but of course there weren’t any.
“Haa….”
Her shirt clung tightly to her body, paired with the black slacks I had delivered that morning. And underneath… Schrödinger’s panties—impossible to know whether she was wearing any or not. I was dying to find out.
“Sorry for making you run that weird errand.”
“It happens… Oh, I put the clothes in the washing machine.”
“Good. Wait, did you put the panties in too?”
“Huh? Yeah… I did.”
“Phew… I thought I was in serious trouble. My period suddenly started again.”
“You said you had a meeting earlier….”
“Obviously that was a lie. How could I say something like that in front of so many people?”
“Oh, really? That was a close call….”
Her words should have felt dirty, yet my heart strangely fluttered. Why did I feel such perverse desire toward a woman’s natural bodily function? Maybe it was because I had already started seeing my sister in a completely different way. Still, the fact that she tried to hide it in front of others showed she at least felt some shame.
“Sis.”
“Yeah?”
At this point, I could no longer hold back my curiosity. Asking the person directly was awkward, but if I didn’t ask now, I would never ask, and the question would probably keep me up at night. Since she had already mentioned her period herself, she would probably answer something like this. At least, that’s what I wanted to believe. The hurdle was lower than I had thought.
“Then….”
This might be the gamble of a lifetime. If her reaction was negative here, I would have no choice but to jump out the window.
“Are you not wearing any panties?”
I finally said it. It wasn’t even a confession, yet my heart pounded wildly. The real question wasn’t whether she was wearing panties or not, but whether she would actually answer me. The cold sweat on my palms spoke volumes about how I felt.
“Huh? Of course I am.”
“…Really?”
“I brought a spare just in case. But I completely forgot I was wearing a white skirt!”
“So that’s how it is with girls… That really was a close call.”
“Unless it’s really urgent, we usually don’t do that, you know?”
“Phew….”
Her casual, normal answer let me breathe a sigh of relief. I wiped my sweaty palms and returned to my usual natural movements. I hadn’t known she carried spare underwear with her. That was new information.
“Why? Did you think I wasn’t wearing any?”
“…I got worried when I thought about it.”
“Come on. Would I really do that? If I had left them behind, I would have asked you to bring them in the first place.”
“That’s true….”
It seemed I had somehow gotten past the crisis. Right. This was just a normal conversation between siblings. That’s how I had to think about it.
“Yeah…!”
But why was my sister desperately trying to stop the corners of her mouth from turning up? And why was I feeling disappointed that she wasn’t going without panties?
“I’m going to wash up.”
“Okay.”
“If you haven’t eaten yet, let’s eat together when I come out.”
“Sure.”
She went in to shower. I clutched my heart, which had finally returned to a normal rhythm. How was I supposed to eat dinner with her? Every time I looked at her, I would probably picture her naked.
“Done.”
I finished what could barely be called cooking—it was really just setting the table. Mom was the one who actually cooked anyway, so it didn’t matter.
“Whoa… smells delicious.”
“Is your stomach feeling better……?”
“Yeah! I’m fine!”
My sister casually walked out wearing nothing but her underwear and answered me before dashing into her room. It was only for a split second, but I stared—whether unconsciously or perhaps consciously. It was the blue silk pair I had seen that morning. The exact set that had been on the far right of her underwear drawer.
“……Your clothes.”
“Hm?”
“Never mind. Enjoy the food.”
I almost told her to put some clothes on, but I stopped myself because I knew I would be the one feeling disappointed if she did.
Far right… blue….
I was surprised that my experiment had been successful. A fresh wave of dopamine headed downward, making me hard again.
“…Aren’t you taking summer vacation this year?”
“Summer vacation? I think I’ll get about three days.”
“That’s quite a lot.”
Because thoughts of her panties kept invading my head, I quickly changed the subject, afraid that if I didn’t I would end up talking about them out loud.
“Oh right! I forgot I was supposed to buy you something delicious?”
“It’s fine. Nothing really happened to you.”
“No, I mean it. I’ll buy you a proper meal. Let’s eat out tomorrow.”
“…Sure.”
I couldn’t even count how many times my sister and I had eaten together. But this evening felt like it would be different somehow.