My Older Sister's Sexy Panty

The next day at night.

I'm holding a bra top covered in my semen in my hand.

I was outside of my sister's room. It was time to masturbate.

"Sister. it's me."

"The door is open, so come in," I heard my sister's voice from inside.

Before opening the door, I took a deep breath.

How much did I think before coming to this room?

I thought about it and thought about it, but I only wasted time and added stress.

Because this was a problem for which there was no right answer from the beginning.

I steeled myself and opened the door.

My older sister was sitting in front of the dressing table, fixing her hair. She must have been preparing to sleep, so she had only a thin slip cloth on her body.

Black underwear is visible beneath the slip.

My sister always looked like this at home, but her outfit felt particularly provocative today.

"Why are you here so late? I thought you were missing it from the first day and tried to avoid."

"Well..." 

I wanted to say let's stop doing this.

I wanted to say that we should just be normal sisters and brothers like before.

But when I saw my sister, instead of saying the words I had practiced several times, I was speechless and didn't know what I should say.

I'm really indecisive here. Although I wanted this, deep in my heart, I know I wanted something like this to happen, but I'm also scared of things. I don't know what will happen if this continues; I don't know what will happen to my relationship with my older sister after this. This unknown really made me indecisive.

"it's okay. Are you going to masturbate now?" She asked.

"… …"

"You're not answering?"

My sister glares into my eyes through the mirror.

I swallowed dry saliva and nodded.

"I will do it now."

"Okay. When you doing it, you have to think me. Got it?"

Saying that, my sister stood up.

Then she put her hand on her hips and pulled down the panties she was wearing.

I was startled by my sister's sudden action and turned around.

What on earth are you thinking, taking off your panties out of nowhere in front of your little brother? I want to see it, but I don't wish to appear as a pervert. Fuck my conflicted heart.

"Today, you can use this."

Something light was placed on the top of my head.

Panties… Surely it's not what I think?

Carefully I grab something placed on my head with my hand.

I felt the texture of the soft fabric.

I checked it with my own eyes, and sure enough, it was the panties my older sister was wearing.

The panties, which were embroidered with a luxurious pattern, were half see-through.

My sister just said that today I have to use this.

It probably means that I have to cum in these panties today, just like I did yesterday.

My older sister was sitting on the bed with her legs crossed and looking up at me.

Is she enjoying watching me get flustered?

Even though I was stuttering, I tried to squeeze out words of defiance.

"Hey, sister, something like this."

"Why? Don't you like it?"

My sister smiled and crossed her legs to the other side.

The pure white thighs exposed beneath the short slip attract my attention.

Moreover, my sister is not wearing panties right now.

If I just try to look, I might see the important part.

When I thought about that, my heart started pounding.

But that place is the Bermuda Triangle.

If I lose my attention there, I will drift forever.

I used all my mental power to look away to avoid such a situation.

"Okay. I'm going to cum on panties, okay?"

"It's okay,. And after you do that, be sure to come get tested. got it?"

"Test?"

Does that mean you are going to check whether I masturbated properly as you told me to do? Isn't simple when I cum, I masturbate, what test does she need.

What does my sister want to do?

Does she just want to see me embarrassed, or is there some other purpose?

I don't know what my sister is thinking on earth.

But even though I am dissatisfied, I know that this was something that I dreamed of... No, I didn't dream this, but fucking her. Anyways... Let's do this and try to get back to a normal relationship or explore this relationship further.