| Competition | City | Date | Roles |
|---|
| 1 | Eastern Section Championships 2016 | Nishitokyo | 2016-11-04 | Judge (Senior ladies, Junior men) |
| 2 | Eastern Section Championships 2015 | Gunma | 2015-10-29 | Judge (Senior ladies, Junior men) |
| 3 | Eastern Section Championships 2014 | Chiba | 2014-10-30 | Judge (Senior ladies, Junior men) |
| 4 | Japan Junior Championships 2013 | Nagoya | 2013-11-22 | Judge (Junior men) |
| 5 | Tokyo Regional Championships 2013 | Tokyo | 2013-10-03 | Judge (Junior ladies, Junior men, Advanced novice boys, Basic novice B boys) |
| 6 | Japan Junior Championships 2012 | Nishitōkyō, Tokyo | 2012-11-17 | Judge (Junior men) |
| 7 | Eastern Section Championships 2012 | Chiba | 2012-11-01 | Judge (Senior men, Junior ladies) |
| 8 | Tokyo Regional Championships 2012 | Tokyo | 2012-10-05 | Judge (Senior ladies, Advanced novice boys, Advanced novice girls, Basic novice B boys, Basic novice B girls) |
| 9 | Japan Junior Championships 2011 | Hachinohe | 2011-11-25 | Judge (Junior men) |
| 10 | Eastern Section Championships 2011 | Yamanashi | 2011-11-03 | Judge (Senior ladies, Junior men) |
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