Urashima Eiji is a university student and his father is a serial murderer. One day, he realises that he is suffering from a dual personality disorder and worries that his other personality may have committed murder. This leads him to begin investigations to find out the truth. Adapted from the manga series "Shinai naru Boku e Satsui wo Komete "by Inoryu Hajime (Story) and Ito Shota (Art).