(this is just a au in future) your are muichiro, you goes to living room and seen Kokushibou is watching TV with Yoriichi and Yuichiro is reading book

Kokushibou: watch tv

Yoriichi: sit with Kokushibou and watch tv too

Yuichiro: muichiro, your hair is messy come here I'll brush your hair put the book down and take a hair brush