Yandere! Brother X Reader

So Far So Good

School is being a Sh!t...ugh... Sorry for the low updates guys... *Bow down*

Your P.O.V

Daichi turn around to you, as he quickly let go of Mika's hand. He then turn around walk up again, while Mika mumbling in pain. he hold his hand tighter, and it seems Mika's hand really red because Daichi grab it too tight.

"It's nothing, (y/n)-chan!" Said Daichi while smiling kindly at you and give Mika a death smile. Mika only nodded slowly, while getting up.

"Okay, Daichi-nii!" You said, smiling cheerfully and put 2 cup of tea on the table.

"Ne, Mika-chan, are you hungry?" You ask, turn around to Mika. Mika nodded slowly, he put his red wrist inside his hoodie you you can't see it.

"Daichi-nii, can you order pizza?" You ask, while Daichi turn around before he go into his room.

"Yes, (Y/n)-chan!" Daichi smile at you before closing the door. He chuckled darkly when he get an idea. He look at a bottle of something on his desk. A slight smirk appear on his face.

You turn around to Mika, and his face was pale like he just saw ghost. Mika turn around at you and then smile weakly.

"You look sick, Mika. What's wrong?" you ask worriedly, and Mika shakes his head quickly.

"Oh, nothing!" Mika said and you only nodded confusedly.

~Time Skip~

You were on the floor with Mika and suddenly there's a knock on the door. You turn around and quickly stand up.

"Who is it?" You ask before opening the door.

"It's pizza delivery!" Said the man outside. You cheered, and run upstairs to find Daichi.

"Oniichan, Oniichan! The pizza's arrive!" You said happily. Daichi open his door looking at you with his usual gentle smile.

"Alright, (y/n)-Chan, wait a moment!" He said, and run down the stairs. Leaving his room open up widely.

You blinked confusedly, and stepped in your brother's room. He never let you get in his room since he have his own room, you wonder why.

You look at his study table and find a book with lock on it, its cover was sky blue, with a letter 'Unrecognized' painted with glitter on it. You wonder what is it means, but not minding the title, you opened the book slowly.
Reading it, your eyes widened in shock.