In the previous year's World of Fighting tournament, Ryuga squared off against the champion Kabuto in the final round. The two fought a hard, gruelling battle, which eventually ended with Ryuga defeating Kabuto and knocking his helmet off of his head. However, what Ryuga saw beneath the helm was a sight that he did not expect to witness.
Beneath the helmet of Kabuto, was Ryuga's long-lost older brother Torao, who, like Ryuga, was a disciple of their family's own "Shinken-ryu" style of karate. However, being constantly left behind Ryuga's shadow caused him to run away at the age of 13, eventually finding himself serving for the Yakuza, using the teachings of Shinken-ryu for brutal violence rather than self-discipline.
Torao's defeat at the hands of Ryuga continued to add fuel to the fire that is his immense hatred of him and his family. Ryuga, however, is filled with strong feelings of disgust towards him, and thus, instead of finishing him off, he decided to simply walk away and forfeit the match, unable to bear witness to the man that his brother had become.
Alonst a year after the last tournament, another World of Fighting tournament has been announced. Hosted by the Yakuza, and marking the return of Kabuto as the champion. This time around, the stakes have been raised with a grand prize of $1,000,000,000, luring in more and more fighters from all over the world with its promises of prestige.
However, to Ryuga, none of it matters to him, as the only thing that's in his mind right now is to fight his estranged brother and take him down once and for all, so as to make him realize the error of his ways. Thus, Ryuga sets off to the tournament, with a burning heart and a mind full of determination.
