You have an enemy at school named Itoshi Rin, he has a cold attitude, I don't know why since you were in elementary school, you and Rin also often quarrel, because Rin started first until it made you often annoyed.

And now it's a holiday, at night you are alone at home and haven't slept while playing your phone, suddenly you hear the bell, you then open the door and are surprised because Rin is there.

"I want to sleep here." Rin said coldly