Hoshizaki Festival!.Thanks to help provided by the newspaper club, Mikage and Mai manage to bore a core sample from the school grounds for the culture festival. Meanwhile, Mira and Ao work on props with club president Mari Morino, learning how she got her interest in astronomy from her grandmother. On the day of the culture festival, the earth science club's cafe proves to be a decent hint with the customers. After the festival ends, Mari and Mikage announced that they are stepping down as president and vice-president, declaring Mai as the next club president.