32nd All-Japan Open Championship — IKO (2000)
30th All-Japan Open Championship — IKO (1998)
36th All-Japan Open Championship — IKO (2004)
34th All-Japan Open Championship — IKO (2002)
33rd All-Japan Open Championship — IKO (2001)
41st All-Japan Open Championship — IKO (2009)
40th All-Japan Open Championship — IKO (2008)
38th All-Japan Open Championship — IKO (2006)
37th All-Japan Open Championship — IKO (2005)
45th All-Japan Open Championship — IKO (2013)
