Ryuko was raised by her father, a gambler named Senzo Yano in Kumamoto, Kyushu, after her mother died when she was little. When she turned 18 years old, her father was attacked and killed by a stranger in alley. Ryuko then dissolves her yakuza family, and, carrying the wallet left by the killer, she sets out on a journey to avenge her father's death. Five years later, she wanders the nation, known only as! Red Peony Oryu who has a red peony tattooed on her shoulder and has the defiance and courage of a man. She meets Katagiri - a loner gambler, Kumatora - boss of a family in Shikoku, and Otaka - female boss of the Doman Family in Osaka. With their help, she finally catches up with the man who murdered her father.
as Hibotan no Ryu
as Naoki Katagiri
as Torakichi Kumasaka
as Fujimatsu, the Immortal
as Nakagawa
as Henchman