"First Mix"

It is the first day of school for Aimoto Rinku, who had recently moved back to Japan after living abroad in Africa. During lunch, she overhears a familiar song over the intercom that she traces to DJ and broadcaster Akashi Maho. Rinku expresses interest in how DJing works, prompting Maho to take her to a performance by Peaky P-key that inspires her to start her own unit. Maho is initially put off by Rinku's repeated offers to join her, but agrees to help and teach her the basics.