Description: 1999 - the "24 Wards." A string of mysterious serial killings plagues the city.
The detectives of the 24 Wards Heinous Crimes Unit have their eyes on one man: Kamui Uehara, legendary serial killer and assassin of a number of government officials 20 years prior in the now-famous "Silver Case." However, nobody knows who—or what—Kamui really is.
Has he really returned? Who is this infamous serial killer?