| Competition | City | Date | Roles |
|---|
| 1 | 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) |
| 2 | Eastern Section Championships 2016 | Nishitokyo | 2016-11-04 | Judge (Senior men, Junior ladies) |
| 3 | Japan Novice Championships 2015 | Tokyo | 2015-10-23 | Judge (Advanced novice girls, Advanced novice boys) |
| 4 | Eastern Section Championships 2014 | Chiba | 2014-10-30 | Judge (Senior men, Junior ladies) |
| 5 | Kanto Regional Championships 2013 | Saitama | 2013-10-11 | Judge (Senior men, Senior ladies, Junior men, Advanced novice boys, Advanced novice girls, Basic novice B boys) |
| 6 | Tohoku-Hokkaido Regional Championships 2012 | Hokkaido | 2012-10-12 | Judge (Junior ladies, Advanced novice girls) |
| 7 | Tokyo Regional Championships 2011 | Tokyo | 2011-10-08 | Judge (Senior ladies, Junior men, Advanced novice girls, Basic novice B boys) |
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