4 Season
36 Episode
Ring Ni Kakero - Season 4 Episode 5 The Flag of Oath
- Year : 2011
- Country : Japan
- Genre : Animation, Action & Adventure
- Studio : tv asahi, ANIMAX
- Keyword : sports, based on manga, shounen, boxing, spokon
- Director : Masami Kurumada
- Cast : Masakazu Morita, Rie Tanaka, Mami Kingetsu, Takeshi Kusao, Hideo Ishikawa, Hiroshi Kamiya