| Competition | City | Date | Roles |
|---|
| 1 | Japan Junior Championships 2023 | Otsu | 2023-11-11 | Judge (Junior ladies, Junior pairs) |
| 2 | Chu-Shikoku-Kyushu Regional Championships 2023 | Fukuoka | 2023-10-06 | Judge (Senior ladies, Junior ladies, Advanced novice boys) |
| 3 | Japan Championships 2022 | Kadoma | 2022-12-22 | Judge (Senior ladies, Senior pairs) |
| 4 | Western Section Championships 2022 | Kyoto | 2022-10-27 | Judge (Senior men, Senior ice dance, Junior ladies, Junior ice dance) |
| 5 | Tohoku-Hokkaido Regional Championships 2022 | Hachinohe | 2022-10-07 | Controller (Junior ladies, Advanced novice boys)
|
| 6 | Japan Championships 2021 | Saitama | 2021-12-22 | Judge (Senior men) |
| 7 | Eastern Section Championships 2021 | Tokyo | 2021-10-28 | Judge (Senior ladies, Junior men) |
| 8 | Eastern Section Championships 2019 | Nagano | 2019-10-24 | Judge (Senior men, Junior ladies, Junior pairs) |
| 9 | Kanto Regional Championships 2018 | Nikko | 2018-09-27 | Referee (Junior ladies, Advanced novice boys, Advanced novice girls)
|
| 10 | Japan Championships 2017 | Tokyo | 2017-12-19 | Judge (Senior ladies) |
| 11 | Kanto Regional Championships 2016 | Ibaraki | 2016-09-30 | Referee (Junior ladies, Advanced novice boys, Basic novice B girls)
|
| 12 | Tokyo Regional Championships 2015 | Tokyo | 2015-09-24 | Controller (Senior ladies, Junior men, Advanced novice boys, Basic novice B girls)
|
| 13 | Eastern Section Championships 2014 | Chiba | 2014-10-30 | Judge (Senior ladies, Junior men) |
| 14 | Kanto Regional Championships 2013 | Saitama | 2013-10-11 | Judge (Senior ladies, Senior men, Junior men, Advanced novice boys, Advanced novice girls, Basic novice B boys) |
| 15 | Tokyo Regional Championships 2013 | Tokyo | 2013-10-03 | Controller (Senior ladies, Senior men, Advanced novice girls, Basic novice B girls)
|
| 16 | Japan Junior Championships 2012 | Nishitōkyō, Tokyo | 2012-11-17 | Judge (Junior ladies) |
| 17 | Tokyo Regional Championships 2012 | Tokyo | 2012-10-05 | Judge (Senior ladies, Advanced novice girls, Advanced novice boys, Basic novice B girls, Basic novice B boys) |
| 18 | Tokyo Regional Championships 2011 | Tokyo | 2011-10-08 | Judge (Senior ladies, Junior men, Advanced novice girls, Basic novice B boys) |
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