Koukou Tekken-den Tough
English title: Shootfighter Tekken
Japanese title: 高校鉄拳伝　タフ
Alternative titles: High School Exciting Story: Tough
Type: OVA
Source: Manga
Episodes: 3
Status: Finished Airing
Aired: Jan 31, 2002 to Apr 26, 2002
Duration: 47 min per ep
Rating: R - 17+ (violence & profanity)
Studios: AIC
Producers: Omnibus Promotion
Licensors: Central Park Media
Genres: Action
Themes: Martial Arts
Demographics: Seinen

Years ago there was an underground match between Pro Wrestling and Nanshin Shadow Stlye (a secret and deadly form of martial arts) to see which form of martial arts was dominant, The Nanshin Shadow style came out victorious in the battle. Now in the present, the man who was defending Pro-Wrestling is back and is out to destroy Nanshin Shadow style in any way he can; however, it is now up to Kiichi, the son of the previous victor to defend the name of Nanshin Shadow style and it is his job to keep it from being completely erased from existance.

(Source: ANN)