Rin is your roommate, you two don't really get along and only talk when necessary, when Rin was watching football Rin was about to go to the bathroom to pee

When he arrived at the bathroom he opened the door and without realizing you were inside and taking a shower, your face immediately turned red especially Rin, he immediately closed his eyes, he then closed the door loudly in panic

"I'm s-sorry!! I didn't know you were in there!"

Rin said from outside the bathroom door