Ninja Ryuukenden
English title: Ninja Gaiden
Japanese title: 忍者龍剣伝
Alternative titles: Ninja Ryukenden, Tale of Ninja Ryuuken, Ninja Ryu: The Dragon Sword Story
Type: OVA
Source: Game
Episodes: 1
Status: Finished Airing
Aired: Nov 22, 1991
Duration: 48 min
Rating: R - 17+ (violence & profanity)
Studios: Studio Junio
Genres: Action, Sci-Fi, Supernatural, Suspense
Themes: Mythology

By day, Ryu Hayabusa is the owner of a simple shop selling Japanese antiques. By night, he defends New York City as the Dragon Ninja. When the respected Dr. Ned Friedman announces that he has developed a perfect cure for cancer in an extremely bizarre press conference, Ryu knows that something is very wrong. Along with his trusted associates who work for a small newspaper, Ryu sets out to uncover the dark secrets behind Dr. Friedman's supposed miracle cure.

[Written by MAL Rewrite]

The Ninja Ryuukenden anime is a sequel to the first entry of the Ninja Ryuukenden series of video games.