After school, Ami wants an explanation from Sensei regarding Noriko, and he relates what Noriko told him yesterday about their past. Noriko appears and asks to borrow Sensei — Ami isn't pleased, but concedes that Noriko seems nicer than she expected. Noriko takes Sensei to see her sister Niki, who is now a well-known singer (although Sensei hasn't heard of her). Noriko says that Sensei and Niki were together for five years, and that Niki took Sensei's disappearance harder than anyone. When Niki sees him, she makes it clear that she is still angry, and she doesn't believe that he has amnesia. However, she does grudgingly concede that she's glad Noriko found him, and leaves him her phone number before she has to get back to work.