Shuranosuke Zanmaken: Shikamamon no Otoko
English name: Sword for Truth
Genres: Action, Supernatural, Suspense
Type: OVA, Episodes: 1
Aired: Dec 28, 1990
Studio: Magic Bus
Source: Novel
Rating: R+ - Mild Nudity
Synopsis:
Shurannosuke Sakaki is a masterless samurai with a razor-sharp katana and a cold-hearted personality. Whenever you see the mark of two crossed scythes on his back, death is sure to follow. Because of his exceptional swordsmanship, Shurannosuke is hired by the Nakura Clan to rescue Princess Mayu from the Seki Ninja. In this mission, he must use his full potential to survive the Seki Ninja's notorious henchmen. 

(Source: ANN)