Koichi is convinced he'll never manage to become a hero, until he meets someone with an odd take on justice.

Um ex-membro de um clã ninja desistiu para viver uma vida tranquila com sua esposa e filho. Uma noite, sua família morre após ser atacada por uma organização misteriosa. O homem é torturado pelas consequências.

A 18 year old boy from Yokosuka, Japan named Ryo Hazuki, finds himself on the path of revenge after watching his father's death right in front of him by a man named Lan Di, a ruthless martial arts master with incredible skills, during Roy's quest for revenge, he tries to be the best martial artist in the world so he can defeat Lan Di, this is the anime version of the Sega Dreamcast hit from the early 90s/2000s.