Mr. Kitano was only caring for his wife's handicapped needs, Sawa gets suspicious and eventually confronts Mr. Kitano, who explains. Mrs. Kitano fakes acceptance of the divorce and tells that to Sawa. Mr. Kitano wants to marry Sawa and bought an engagement ring. He then hid the ring in the monitoring box containing the scientific measurement instruments next to the river where he and Sawa often meet. There is then reconciliation. The restaurant owner apologizes to Sawa for his outburst. Mrs. Kitano feigns reconciliation by agreeing to sign divorce papers without a legal contest. She drives Mr. Kitano back to the station. During the drive, she reveals her mental instability. She tells him she purposely caused her injuries. She then crashes the car on purpose, driving it down a ravine. Mr. Kitano dies and his body mutilated. The police do nothing because it's hard to prove in court that there was a murder. Sawa finds the engagement ring receipt but cannot find the ring. Sawa asks Mrs. Kitano, who doesn't know. Mrs. Kitano then tells Sawa that Sawa killed Mr. Kitano. Then leaves with a slimy smile on her face. Sawa, distraught, attempts suicide but stops before a train hits her. Sawa saw a firefly insect, interpreting it as a sign to go on with life, not suicide. It is then revealed that Sawa is pregnant. Some time later, a little boy and girl are playing by the river where Mr. Kitano and Sawa met frequently. The little boy finds the engagement ring in the now dilapidated monitoring box by the river and puts it on the girl's finger. The film ends on this note. Cast Takumi Saito Hiroyuki Hirayama Aya Ueto References External links 2017 films 2017 romance films Japanese romance films Films shot in Japan 2010s Japanese films