| Competition | City | Date | Roles |
|---|
| 1 | Eastern Section Championships 2023 | Hachinohe | 2023-11-02 | Judge (Senior men, Junior ladies) |
| 2 | Tohoku-Hokkaido Regional Championships 2023 | Niigata | 2023-09-29 | Judge (Junior ladies, Intermediate novice boys) |
| 3 | Eastern Section Championships 2020 | Kofu | 2020-11-06 | Judge (Senior ladies, Junior men) |
| 4 | Kanto Regional Championships 2020 | Hitachinaka City | 2020-10-02 | Judge (Senior men, Senior ladies, Junior men, Advanced novice boys, Intermediate novice girls, Intermediate novice boys) |
| 5 | Japan Junior Championships 2019 | Kanagawa | 2019-11-15 | Judge (Junior men) |
| 6 | Eastern Section Championships 2019 | Nagano | 2019-10-24 | Judge (Senior men, Junior ladies) |
| 7 | Kanto Regional Championships 2019 | Yamanashi | 2019-10-03 | Judge (Senior ladies, Senior men, Junior men, Intermediate novice boys, Intermediate novice girls) |
| 8 | Japan Championships 2018 | Osaka | 2018-12-20 | Judge (Senior men) |
| 9 | Eastern Section Championships 2018 | Hachinohe | 2018-10-25 | Judge (Senior men, Junior ladies) |
| 10 | Japan Novice Championships 2017 | Otsu | 2017-10-20 | Judge (Basic novice B girls, Basic novice B boys) |
| 11 | Tohoku-Hokkaido Regional Championships 2017 | Niigata | 2017-09-21 | Judge (Junior ladies, Advanced novice boys, Advanced novice girls) |
| 12 | Japan Junior Championships 2016 | Sapporo | 2016-11-18 | Judge (Junior ladies) |
| 13 | Kanto Regional Championships 2016 | Ibaraki | 2016-09-30 | Judge (Junior ladies, Advanced novice boys, Basic novice B girls) |
| 14 | Eastern Section Championships 2015 | Gunma | 2015-10-29 | Judge (Senior men, Junior ladies) |
| 15 | Japan Junior Championships 2014 | Niigata | 2014-11-22 | Judge (Junior ladies) |
| 16 | Kanto Regional Championships 2014 | Nagano | 2014-09-25 | Judge (Junior ladies, Basic novice B girls) |
| 17 | Japan Junior Championships 2013 | Nagoya | 2013-11-22 | Judge (Junior ladies) |
| 18 | Eastern Section Championships 2013 | Gunma | 2013-11-01 | Judge (Senior ladies, Junior men) |
| 19 | Eastern Section Championships 2012 | Chiba | 2012-11-01 | Judge (Senior ladies, Junior men) |
| 20 | Eastern Section Championships 2011 | Yamanashi | 2011-11-03 | Judge (Senior ladies, Junior men) |
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