| Competition | City | Date | Roles |
|---|
| 1 | Tokyo Regional Championships 2020 | Nishitokyo | 2020-10-09 | Judge (Senior men, Junior ladies, Advanced novice boys, Intermediate novice girls) |
| 2 | Eastern Section Championships 2019 | Nagano | 2019-10-24 | Judge (Senior ladies, Junior men, Junior pairs) |
| 3 | Eastern Section Championships 2018 | Hachinohe | 2018-10-25 | Judge (Senior men, Junior ladies) |
| 4 | Japan Novice Championships 2018 | Osaka | 2018-10-19 | Judge (Basic novice B girls, Basic novice B boys) |
| 5 | Shu-Shikoku-Kyushu Regional Championships 2017 | Fukuoka | 2017-10-06 | Judge (Senior men, Junior men, Advanced novice girls, Basic novice B boys, Basic novice B girls) |
| 6 | Eastern Section Championships 2016 | Nishitokyo | 2016-11-04 | Judge (Senior men, Junior ladies) |
| 7 | Japan Novice Championships 2015 | Tokyo | 2015-10-23 | Judge (Advanced novice boys, Advanced novice girls) |
| 8 | Eastern Section Championships 2014 | Chiba | 2014-10-30 | Judge (Senior men, Junior ladies) |
| 9 | Kanto Regional Championships 2013 | Saitama | 2013-10-11 | Judge (Senior ladies, Senior men, Junior men, Advanced novice boys, Advanced novice girls, Basic novice B boys) |
| 10 | Tohoku-Hokkaido Regional Championships 2012 | Hokkaido | 2012-10-12 | Judge (Junior ladies, Advanced novice girls) |
| 11 | Tokyo Regional Championships 2011 | Tokyo | 2011-10-08 | Judge (Senior ladies, Junior men, Advanced novice girls, Basic novice B boys) |
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