As the gang have to look after Iori who winds up as a baby, Yui is confronted by Chinatsu, who challenges her to a karate match and defeats her. Meanwhile, Yoshifumi ponders if his feelings for Yui are because of her similar appearance to Nana. On the second day of the New Year, Yui reverts to right after she was assaulted and, upon returning to normal, remembers vividly about that age.