2nd All-Japan Open Championship — IKO (1970)
1st All-Japan Open Championship — IKO (1969)
57th All-Japan Open Championship — SHIN (WKO) (2025)
4th All-Japan Open Championship — IKO (1972)
3rd All-Japan Open Championship — IKO (1971)
8th All-Japan Open Championship — IKO (1976)
6th All-Japan Open Championship — IKO (1974)
5th All-Japan Open Championship — IKO (1973)
10th All-Japan Open Championship — IKO (1978)
9th All-Japan Open Championship — IKO (1977)
