After a chance encounter at a railway station, Yukari Kawahara (Masami Nagasawa) falls in love with a young doctor Kippei Koide (Issei Takahashi). However, following his sudden collapse and being taken to hospital in a coma, she is informed by the police that both his name and past is false. His place of work also has no record of him. She hires a detective (Daigo) to investigate who this man was whom she has spent several years in a relationship with. When they discover that instead of working he was visiting a cafe and working on writing a book they use this text to uncover the true identity and past of the man.
The film is directed by Kazuhito Nakae, from a script by Nakae and Nozomi Kondo. The acting is good with humorous moments that do not undercut the genuine emotional scenes. There is a subplot about the detective and his relationship with his ex-wife and daughter that plays well in supporting the themes without distracting too much from the main plot. The enjoyment of the film is conditional in part on how intrigued you are by the central mystery or how satisfied you are by the eventual revelation. This investigation takes up the majority of the film, which leaves less time for the more interesting aspect of Yukari’s reaction to the discovery that he is not who he said he was.
The central idea of the film, a man who has lied about his entire past to his partner, is fascinating and offers an interesting examination of what someone would do in that situation. Themes of deciet and forgiveness are well presented in both plot and subplot. Throughout Yukari remains convinced that her boyfriend is a good person and seems relatively unaffected by the revelation that he has lied about his past. In contrast the detective’s story, in which he mistrusts his wife after an affair, offers a little more in the way of emotional substance. An entertaining film that could have delved a little deeper into the motivations of the characters.