| Competition | City | Date | Roles |
|---|
| 1 | Tohoku-Hokkaido Regional Championships 2023 | Niigata | 2023-09-29 | Judge (Senior ladies, Senior men, Junior men, Advanced novice girls, Advanced novice boys, Intermediate novice girls) |
| 2 | Tohoku-Hokkaido Regional Championships 2022 | Hachinohe | 2022-10-07 | Referee (Junior ladies, Advanced novice boys)
|
| 3 | Tokyo Regional Championships 2020 | Nishitokyo | 2020-10-09 | Judge (Senior men, Junior ladies, Advanced novice boys, Intermediate novice girls) |
| 4 | Eastern Section Championships 2019 | Nagano | 2019-10-24 | Judge (Senior ladies, Junior men, Junior pairs) |
| 5 | Tokyo Regional Championships 2019 | Nishitokyo | 2019-09-20 | Referee (Senior ladies, Junior men, Advanced novice boys, Advanced novice girls, Intermediate novice boys)
|
| 6 | Tokyo Regional Championships 2018 | Nishitokyo | 2018-10-05 | Referee (Senior ladies, Junior men, Advanced novice boys, Basic novice B boys, Basic novice B girls)
|
| 7 | Tohoku-Hokkaido Regional Championships 2018 | Sapporo | 2018-09-21 | Referee (Senior men, Senior ladies, Junior men, Basic novice B boys, Basic novice B girls)
|
| 8 | Eastern Section Championships 2017 | Yamanashi | 2017-10-26 | Judge (Senior men, Junior ladies) |
| 9 | Tohoku-Hokkaido Regional Championships 2017 | Niigata | 2017-09-21 | Referee (Junior ladies, Advanced novice boys, Advanced novice girls)
|
| 10 | Tokyo Regional Championships 2016 | Tokyo | 2016-09-23 | Judge (Senior men, Junior ladies, Advanced novice girls, Basic novice B boys) |
| 11 | Tokyo Regional Championships 2014 | Tokyo | 2014-10-10 | Judge (Junior ladies, Advanced novice girls, Basic novice B girls) |
| 12 | Tokyo Regional Championships 2012 | Tokyo | 2012-10-05 | Referee (Senior men, Junior men, Junior ladies)
|
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