Silver Jiken

"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 the true identity of Kamui.

Has he really returned? Who is this infamous serial killer?"

Résumé

This debut game from developer Goichi Suda (also known as Suda51) follows the investigation of a series of murders which appear to match the profile of the killer responsible for a high-profile series of government assassinations twenty years prior.