No Dreams of Santa Claus (S02E13)

When Nene's boyfriend, Takumi Fukuyama, fails to recognize her, she loses touch with her own sense of self and starts to think she is Touko Kirishima. The only one who can resolve this Puberty Syndrome is Takumi, and Sakuta is convinced that fixing this will also safeguard Mai. Determined, he and Ikumi Akagi head to Hokkaido, Takumi's hometown. Upon their arrival at the airport, Takumi greets them, and Sakuta presents the trophy that Nene received for winning a beauty contest...