Ep. 22: The girls celebrate Aira and Rizumu's shared birthday with a surprise party featuring Callings and a prism show.

22

Mion organizes a surprise celebration for Aira and Rizumu, who share a birthday, to lift their spirits after the Summer Queen Cup. She disguises herself to gather preferences, learning Rizumu loves meat while Aira enjoys cakes, clothes, and the idol group Callings, particularly Shou. The event takes place in a planetarium where Callings performs a special song. Shou gifts Aira a dress and Hibiki gives Rizumu chocolate, causing both girls to faint from the gesture. Aira then asks Mion to perform a prism show. The president and Jun arrive with a cake bearing the girls' names, announcing that all three will debut, leaving them surprised.