Koroshiya 1 The Animation: Episode 0
English title: Ichi The Killer: Episode 0
Japanese title: 殺し屋１ THE ANIMATION EPISODE 0
Type: OVA
Episodes: 1
Source: Manga
Genres: Action, Avant Garde, Drama, Horror, Suspense
Studios: AIC
Producers: Amuse, Omnibus Promotion
Duration: 45 min
Rating: R+ - Mild Nudity

A masochistic mobster meets his match in the dark streets of Tokyo. His nemesis, Ichi, is a psychopathic killer with an unrelenting thirst for bloodshed. A horrifying secret burns in his mind, and his hands deal death without mercy. At last, the shrouds of mystery are parted to reveal the origin of the monster. The city will know its greatest fear at the unveiling of Ichi the Killer.

(Source: ANN)