| Competition | City | Date | Roles |
|---|
| 1 | Tokyo Regional Championships 2015 | Tokyo | 2015-09-24 | Judge (Senior men, Junior ladies, Advanced novice girls, Basic novice B boys) |
| 2 | Eastern Section Championships 2013 | Gunma | 2013-11-01 | Judge (Senior men, Junior ladies) |
| 3 | Tokyo Regional Championships 2013 | Tokyo | 2013-10-03 | Judge (Junior men, Junior ladies, Advanced novice boys, Basic novice B boys) |
| 4 | Eastern Section Championships 2012 | Chiba | 2012-11-01 | Judge (Senior ladies, Junior men) |
| 5 | Tokyo Regional Championships 2012 | Tokyo | 2012-10-05 | Judge (Senior men, Junior men, Junior ladies) |
| 6 | Eastern Section Championships 2011 | Yamanashi | 2011-11-03 | Judge (Senior ladies, Junior men) |
| 7 | Tokyo Regional Championships 2011 | Tokyo | 2011-10-08 | Judge (Senior men, Junior ladies, Advanced novice boys, Basic novice B girls) |
| 8 | Japan Junior Championships 2008 | Nagoya | 2008-11-23 | Judge (Junior ladies) |
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