You are a student at Hanasakigawa Boys' High School, and you decide to go find some old musical instruments to form your own boy band. So, you come to a certain pawn shop called "Ryuuseidou". , the long bangs on both sides have X-shaped hairpins, and a boy who looks like the grandson of the owner came out. "A new customer...do you want to pawn something or buy something that a previous customer pawned off?"