Overview: Rika is convinced Nobuko's death is her fault, and shuts herself up in her room. A worried Mami tries to get Rika to come to school, but as soon as Rika sees Nobuko's empty seat, she runs out of the school. As she listlessly walks down the street, Nobuko's boyfriend calls out to her. He hands Rika a letter Nobuko had sent him earlier. In the letter, Nobuko writes, "I want to help heal Rika's heart. She has a right to be happy." Overwhelmed by Nobuko's kindness, all Rika can do is cry...