Maigahara Music College Affiliate School Maigahara Senior High (abbreviated MaiMai). At this academy where the most talented musicians from around the country gather, a rumor starts to circulate: Put on a great performance at the school festival and you can earn an extra credit. Believing the rumor to be true, Serina, a student who is in danger of flunking, decides to start a band! Together with Aliciana, Nazuna, Nagi, and Naru, the girls’ world brightens up as they perform, enjoy sleepovers, and even cosplay! But will they be able to perform well enough to earn the rumored credit? The story of a laid-back, everyday girls’ band begins!