Art of Fighting (龍虎の拳, Ryūko no Ken; lit. "Fist of Dragon and Tiger") is a fighting video game trilogy that was released for the Neo Geo platform in the early 1990s. It was the second fighting game franchise created by SNK, following the Fatal Fury series and is set in the same fictional universe as a prequel to the Fatal Fury series.
An Original Video Animation titled Art of Fighting: Battle Spirits (バトルスピリッツ 龍虎の拳) was created and directed by Hiroshi Fukutomi, animated by Studio Comet and produced by NAS. It premiered on Fuji TV on December 23, 1993
While trying to rescue a cat, martial artist Ryo Sakazaki and his playboy best friend Robert Garcia unwittingly break into a jewel thief's apartment. Moments after entering, they witness the thief being murdered by a group of thugs. Despite fighting their way out and escaping, things go from bad to worse when Ryo and Robert learn that the thugs were working for Mr. Big, the biggest crime boss in South Town.
Not only does Mr. Big believe that the two have stolen the priceless "Eye of Sirius" diamond, but he has also taken Ryo's younger sister Yuri hostage. Without the diamond and out of options, Ryo and Robert must fight their way past Mr. Big's men and save Yuri before it's too late.