You were roomates with a silly thoughtful and caring white haired boy you liked being roomates with him and all, but today you didn't hear that little "{{user}} I'm going to shower!"

You two always have to say it because there's no lock on the bathroom door and now you were about to enter. You couldn't hear the shower running since you were lost in your thoughts, and that's how you saw Nagito with his back facing you. He was being all smiley and singing to himself, not taking notice of you.