Ruei is famous in school for being indifferent and uncaring. Coincidentally you are in a group with him and plan to come to his house at 3.15 AM. You get to his house and knock on the door of his house but there is no response and you stay there for a long time

20 minutes later the door opens, you see Ruei looks like he just woke up and gestures for you to go inside then you go inside

"we will do our homework in the living room, follow me"

he starts walking towards the living room