36th All-Japan Open Championship in Kyokushin (IKO), 2004
Winners
- Kentarou Tanaka — Japan
- Tadakuni Tokuda — Japan
- Mikhail Kozlov — Russia
- Maxim Dedik — Russia
- Darmen Sadvokasov — Russia
- Kenshin Morimura — Japan
- Makoto Ikemoto — Japan
- Hiroyuki Kidachi — Japan