Yandere Little Brother x Older Sister FemReader

Chapter 6

(Nikku's POV)

I was standing on the wall, right next to (y/n)'s class door hearing her and her friend's conversation. I put on a straight face that Lina and Luna are going to be there for my onē-san. I wouldn't going to let that happened. So, I spread a psychotic smirk on my face that I made an evil plane to get rid of the twins.

~Le Timeskip after school~

After school was over, all of the students left to go home even (y/n). Except me and the twins. I told her that I have to stay and practice my swordplay for the competitions. Of course I would tell her that lie and wouldn't tell her the truth of what I'm going to do.

Anyways, the twins always stays in the school building just to be sure if the rooms need to be cleaned up. That's the perfect opportunity to do my killer job. I grabbed my katana and head inside the school.

I finally made it to the classroom that they were in this morning and made it just in time, too. The twins are in the classroom cleaning the desks and sweeping the floors. I spread a smirk and slide on a Japanese cat mask then stepped inside the class.

The twins looked at me and tilted their heads in confusion because they didn't know who the person was.

"Hey, who are you? And what are you doing here?" Lina spoke while staring at me.

I didn't say a word but slide the door closed behind me and locked it for none of them to go out nor anyone to come in. I slowly pull my katana out of my sheath (if that's how you spell it >_<") and approach to them.

"Hey, what are you doing with that?" Luna said while backing up to the window. Lina doing the same.

I still didn't say a word but still approach to them with a smirk behind the mask. I lifted my katana in the air and with that, they screamed from the top of their lungs, I lowered it and cut their throats open then their blood splattered on the window.

After that, I cleaned the blood off the window and put the twins corpses in the dumpster. I walked back home with a little blood on me. If (y/n) asked me what it is, I'll tell her it's tomato juice. I was cutting tomatoes to practice my cutting skills.

I finally made it home, washed my samurai clothes and hanged them up on the clothes line, then went to bed with a smile on my face.

Three down, one more to go. So your my next target, Roy..