Dogs: Bullets & Carnage
Genres: Action
Type: OVA, Episodes: 4
Aired: May 19, 2009 to Jul 17, 2009
Studio: David Production
Source: Manga
Rating: R - 17+ (violence & profanity)
Synopsis:
It is sometime in the future, where a certain European city extends far underground, even secret, dark levels that have the key to the past. Ex-assassin Mihai has returned and is living with Kiri, who now runs a restaurant. Sword-wielding Naoto, Haine (white hair), a mysterious product of genetic engineering and his sometime partner Badou (eyepatch).

(Source: ANN)