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)
44th All-Japan Open Championship — IKO (2012)
42nd All-Japan Open Championship — IKO (2010)
49th All-Japan Open Championship — IKO (2017)
48th All-Japan Open Championship — IKO (2016)
