| Competition | City | Date | Roles |
|---|
| 1 | Kanto Regional Championships 2017 | Kanagawa | 2017-09-28 | Judge (Senior ladies, Senior men, Junior men, Advanced novice girls, Basic novice B boys) |
| 2 | Japan Novice Championships 2016 | Osaka | 2016-10-21 | Judge (Basic novice B boys, Basic novice B girls) |
| 3 | Tokyo Regional Championships 2016 | Tokyo | 2016-09-23 | Judge (Senior ladies, Junior men, Advanced novice boys, Basic novice B girls) |
| 4 | Japan Novice Championships 2014 | Osaka | 2014-10-24 | Judge (Advanced novice girls, Advanced novice boys) |
| 5 | Japan Novice Championships 2013 | Ibaraki | 2013-10-25 | Judge (Basic novice B boys, Basic novice B girls) |
| 6 | Tohoku-Hokkaido Regional Championships 2013 | Aomori | 2013-10-11 | Judge (Junior ladies, Basic novice B girls) |
| 7 | Japan Novice Championships 2012 | Kyoto | 2012-10-26 | Judge (Advanced novice boys, Advanced novice girls) |
| 8 | Japan Novice Championships 2011 | Tokyo | 2011-10-28 | Judge (Advanced novice boys, Advanced novice girls) |
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