Shuuchakueki: Twilight express no koi (2012)

This drama unfolds on the Twilight Express, Japan's longest overnight train, a roughly 22-hour journey between Osaka and Sapporo. Chie and Keisuke, played by Nakayama and Sato, are two lovers facing a painful goodbye at the end of the trip. Chie is already married, and their relationship has been a passionate secret. The story primarily takes place in their shared suite on the train. Filmed aboard the real Twilight Express with the cooperation of JR West, the train's operator, the film offers an authentic setting.