STORY IDEA!!
Shirabu starts his new life in college and now has to start staying at the dorms. His roommate is Yahaba (omg friendship??).
Later while trying to sleep, he hears loud music coming from the room next door. He goes over and knocks at the door, being met with the one and only Semi Eita.
Knowing their past, Shirabu asks to turn down his music before leaving. Before turning to leave, he notices a girl sitting on his bed in the back.
blah blah blah, I don't know
also, Semi and Kyotani are friends and both are into music, so Yahaba being Shirabu's roommate will make sense later on.