Jun's younger sister Hotaru, who is possessive toward her brother, gets between him and Yuki. Yūki Kaga tries to find a club to join and is persuaded to join the astronomy club by Satsuki, on whom he develops a crush. Ayaka Kamine attempts to confess to Takeru Gōda, but has trouble due to Takeru's stoic and dense personality. Takurō Sugawara walks home with Chizuru Takano, but she fails to see his hints that he is interested in her.