Titre original : School Festival!
On the day of the school festival, Mio wants to practice for the club's live event, but everyone else is helping with their classes' other stands. They later get some practice done, but Mio is still nervous about singing center stage, even with Sawako's costume choices not helping the matter. Ritsu decides to hold a mock concert introduction to calm her nerves, although she still has jitters when the concert starts. Having seen her secret vocal practice beforehand, the others encourage her to do her best and the show manages to be a success. However, leaving the stage Mio trips over the guitar cable and accidentally exposes her underwear to the audience. She ends up getting a fan club, but cannot get over her embarrassment.