Samuraider: Nazo no Tenkousei
Genres: Action, Drama
Type: OVA, Episodes: 1
Aired: Feb 22, 1991
Source: Unknown
Rating: R - 17+ (violence & profanity)
Synopsis:
In a combination of samurai movies and Bomber Bikers of Shonan, Tokyo street punk Masao buys a treasured FZR "katana" motorcycle and becomes a knight of the road, attacking criminals with a genuine katana sword.

Based on the manga by Shinichi Sugimura published in Young Magazine.