Kaoru begins teaching himself to play jazz. At Ritsuko's behest, Sentarō intervenes to protect Kaoru from a group of bullies. At the record store, Kaoru is introduced to Junichi Katsuragi, a friend to the Mukae and Kawabuchi families. Kaoru asks Ritsuko to study with him, but they are joined by Sentarō, to Kaoru's displeasure. The group travels to a beach, where Sentarō intervenes to assist Yurika Fukahori, a girl who is being harassed by a group of men; he promptly falls in love at first sight with her.