In the legendary era of girl bands, forming a band was like getting married, and holding a live show was like having a party. So, what was the meaning of disbanding a band? Against this backdrop, a boy named Yuto Asai receives a call from his childhood sweetheart, Suyo Nagasaki, whose band has just disbanded: "Please, let me forget everything." "???" A thoughtful Yuto replies, "I can't let her be a widow any longer." While they're forming a band and holding a live show, a beautiful girl with white hair and heterochromia appears and tugs at Yuto's sleeve: "Live together, aren't you?" Suyo exclaims, "Is this cheating?" Kaname Rana shakes her head: "I'm not here to break you up, I'm here to join you."