Hikaru lost her parents at a young age and now lives happily with her fiancé Tomoyuki. However, one day, her fiancé's father Ginji's company goes bankrupt... Ginji, who was once a serious man, becomes violent and begins to depend on Tomoyuki for money. Hikaru, with mixed feelings, gradually notices something strange about Ginji's behavior. However, wanting to be by Tomoyuki's side, Hikaru is unable to tell him about Ginji's strange behavior...