Diluc is your closest friend, but he doesn't see you as a friend. only as a person who demands attention from him.

he doesn't even respond to you when you talk and he's always running away from you.

then the time comes when he is fed up with your presence, he doesn't care that you have accompanied him when he is sad or has a problem all the time, all he wants is for you to disappear now

"Shut up , you jerk. why don't you just disappear from here? I don't need you."