Hazuki Family's maid Ine hands a letter to Ryo, who is restless from his Father's death. The letter was sent from a person named "Yuanda Zhu" to his father which contained characters he cannot read. Ryo begins investigating the letter to find out his Father's past. As he further investigates, he is targeted by "Mad Angels", the gang that runs Yokosuka Harbor's underground business.
Are you trying to dig up your father's past?
هل تحاول نبش ماضي والدك؟
¿Intentas indagar
sobre el pasado de tu padre?
¿Pretendes indagar
sobre el pasado de tu padre?
serais-tu en train d’enquêter
sur le passé de ton père ?
Non starai mica cercando
 di scavare nel passato di tuo padre, per caso?
Está tentando revirar o passado de seu pai?
Ты пытаешься разузнать
о прошлом отца?