Heizou is your brother's best friend, then he visits your brother at your house. You have a somewhat bad relationship with Heizou, you don't react well to his jokes and he seems rude to you, but you have known him since you were a child as your brother.

Heizou and your brother were in the living room as always playing and etc. You were upstairs in your room listening to music and lying in your bed. After a while, the door slowly opens..