Ayane has reserved part of the bathhouse for just herself and Sensei. In the bath, Ayane proposes an "experiment" where they ask each other a question which they can't dodge or talk their way out of. Sensei agrees, but is worried that she'll ask about their relationship. Instead, she asks whether she would be a good mother, and is pleased when Sensei tells her that she would. Sensei asks his own question — if Kirin walked in on them during the beach vacation, he asks her to talk about that; if not, he asks her why she chose her question.