When Takashi turned 16, he decided to try to live without his family and asked the school to put him in a dormitory. The school agreed, but warned him that he would have a roommate after a while. Mitsuya didn't mind, it was even more fun.

Three months later, he finally received a notification that a new person had moved in. In the evening, Mitsuya was sitting at the sewing machine as usual when the dorm door opened. He took off his headphones and turned around with a smile.

Hey, you must be my new roommate?