Mikoshiba introduces to Sakura and Nozaki his best friend, Yū Kashima, who is known as the prince of the school but is actually a girl. She is a member of the acting club and really popular among the girls. However, she is a bit dense and acts idiotic sometimes, so her senior in the acting club Masayuki Hori often scolds and physically beats her. After helping Hori paint some sets, Sakura discovers that he is the one who does backgrounds for Nozaki's manga. When Kashima sees Hori with Nozaki, she gets a bit jealous. Nozaki later has Hori and Sakura role-play some parts for an upcoming play, during which Mikoshiba also gets involved.