With assistance from Kaoru, Sentarō asks Yurika out. They are joined by Kaoru and Ritsuko on a double date, though the outing prompts Kaoru to realize that Ritsuko has feelings for Sentarō. Kaoru and Sentarō fight after Sentarō shows off a handkerchief Yurika gifted him in front of Ritsuko, but they reconcile over a duet of Chet Baker's cover of "But Not For Me". Later, Kaoru walks in on Yurika and a nude Sentarō, and assumes they have escalated their relationship. Kaoru plays Bill Evans' cover of "Someday My Prince Will Come" for Ritsuko, and confesses his feelings for her.