| Competition | City | Date | Roles |
|---|
| 1 | Japan Novice Championships 2023 | Tokyo | 2023-10-20 | Judge (Advanced novice girls, Intermediate novice boys) |
| 2 | Kanto Regional Championships 2021 | Chiba | 2021-09-30 | Judge (Senior ladies, Junior men, Advanced novice girls, Advanced novice boys, Intermediate novice girls) |
| 3 | Japan Novice Championships 2019 | Nishitokyo | 2019-10-18 | Judge (Advanced novice boys, Intermediate novice girls) |
| 4 | Tokyo Regional Championships 2018 | Nishitokyo | 2018-10-05 | Judge (Senior men, Junior ladies, Advanced novice girls) |
| 5 | Tokyo Regional Championships 2017 | Tokyo | 2017-09-21 | Judge (Senior ladies, Junior men, Advanced novice boys, Basic novice B girls) |
| 6 | Japan Junior Championships 2015 | Ibaraki | 2015-11-21 | Judge (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 ladies, Junior men) |
| 9 | Japan Novice Championships 2013 | Ibaraki | 2013-10-25 | Judge (Basic novice B boys, Basic novice B girls) |
| 10 | Eastern Section Championships 2012 | Chiba | 2012-11-01 | Judge (Senior men, Junior ladies) |
| 11 | Japan Novice Championships 2011 | Tokyo | 2011-10-28 | Judge (Basic novice B boys, Basic novice B girls) |
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