Tomo and Rupa join Nina, Subaru, and Momoka, making a five-member band. Momoka informs the rest of an upcoming show they could play, but the five members have such different personalities that it doesn't look like they'd ever come together. Nina and Momoka have different feelings about the band, and they begin the show while their relationship remains strained.

Nina and the others arrive at an outdoor music festival. It's a huge venue, and the large stage gets them pumped. Diamond Dust takes the stage and they've gotten better since their last show. Nina and the band absolutely cannot lose. They're going to leave their mark. It's the start of their performance of a lifetime.