| Competition | City | Date | Roles |
|---|
| 1 | Eastern Section Championships 2021 | Tokyo | 2021-10-28 | Specialist (Senior men)
Assistant (Junior ladies)
|
| 2 | Japan Novice Championships 2020 | Gunma | 2020-10-24 | Specialist (Advanced novice girls)
Assistant (Intermediate novice boys)
|
| 3 | Tokyo Regional Championships 2020 | Nishitokyo | 2020-10-09 | Specialist (Senior men)
Assistant (Junior ladies, Advanced novice boys, Intermediate novice girls)
|
| 4 | Eastern Section Championships 2019 | Nagano | 2019-10-24 | Specialist (Junior men)
Assistant (Senior ladies)
|
| 5 | Japan Junior Championships 2018 | Fukuoka | 2018-11-23 | Assistant (Junior men)
|
| 6 | Tokyo Regional Championships 2018 | Nishitokyo | 2018-10-05 | Judge (Senior ladies, Junior men, Advanced novice boys, Basic novice B girls, Basic novice B boys) |
| 7 | Japan Junior Championships 2017 | Gunma | 2017-11-24 | Specialist (Junior men)
|
| 8 | Tokyo Regional Championships 2017 | Tokyo | 2017-09-21 | Judge (Senior men, Junior ladies, Advanced novice girls, Basic novice B boys) |
| 9 | Japan Junior Championships 2016 | Sapporo | 2016-11-18 | Assistant (Junior ladies)
|
| 10 | Tohoku-Hokkaido Regional Championships 2016 | Hachinohe | 2016-10-08 | Judge (Junior ladies, Advanced novice boys, Advanced novice girls) |
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