| Competition | City | Date | Roles |
|---|
| 1 | Japan Junior Championships 2023 | Otsu | 2023-11-11 | Referee (Junior men)
|
| 2 | Chubu Regional Championships 2023 | Nagoya | 2023-09-22 | Controller (Junior ladies, Advanced novice boys, Advanced novice girls, Intermediate novice boys)
|
| 3 | Eastern Section Championships 2022 | Maebashi City | 2022-11-03 | Controller (Senior ladies, Junior men)
|
| 4 | Chubu Regional Championships 2022 | Nagoya | 2022-09-23 | Controller (Junior ladies, Advanced novice boys, Advanced novice girls, Intermediate novice boys)
|
| 5 | Japan Junior Championships 2021 | Nagoya | 2021-11-19 | Controller (Junior ladies)
|
| 6 | Western Section Championships 2021 | Fukuoa | 2021-11-04 | Controller (Senior ladies, Junior men)
|
| 7 | Chu-Shikoku-Kyushu Regional Championships 2021 | Fukuoka | 2021-09-23 | Referee (Senior ladies, Junior ladies, Advanced novice boys)
|
| 8 | Japan Junior Championships 2020 | Hachinohe,Aomori | 2020-11-21 | Controller (Junior men)
|
| 9 | Kinki Regional Championships 2020 | Osaka | 2020-10-02 | Controller (Senior men, Junior ladies, Advanced novice girls)
|
| 10 | Chubu Regional Championships 2020 | Nagoya | 2020-09-25 | Referee (Senior ladies, Senior men, Junior men, Advanced novice girls)
|
| 11 | Western Section Championships 2019 | Otsu | 2019-11-01 | Controller (Senior men, Junior ladies)
|
| 12 | Japan Novice Championships 2019 | Nishitokyo | 2019-10-18 | Referee (Advanced novice boys, Intermediate novice girls)
|
| 13 | Kinki Regional Championships 2019 | Shiga | 2019-10-03 | Controller (Junior ladies, Advanced novice boys, Advanced novice girls)
|
| 14 | Tohoku-Hokkaido Regional Championships 2019 | Hachinohe Aomori | 2019-09-20 | Referee (Junior ladies, Advanced novice boys, Advanced novice girls)
|
| 15 | Japan Junior Championships 2018 | Fukuoka | 2018-11-23 | Controller (Junior men)
|
| 16 | Japan Novice Championships 2018 | Osaka | 2018-10-19 | Referee (Basic novice B boys, Basic novice B girls)
|
| 17 | Tokyo Regional Championships 2018 | Nishitokyo | 2018-10-05 | Controller (Senior men, Junior ladies, Advanced novice girls)
|
| 18 | Tohoku-Hokkaido Regional Championships 2017 | Niigata | 2017-09-21 | Controller (Senior ladies, Senior men, Junior men, Basic novice B boys, Basic novice B girls)
|
| 19 | Kanto Regional Championships 2016 | Ibaraki | 2016-09-30 | Controller (Senior ladies, Senior men, Junior men, Advanced novice girls, Basic novice B boys)
|
| 20 | Tohoku-Hokkaido Regional Championships 2015 | Misawa | 2015-10-01 | Controller (Senior men, Senior ladies, Junior men, Advanced novice girls)
|
| 21 | Tokyo Regional Championships 2015 | Tokyo | 2015-09-24 | Referee (Senior men, Junior ladies, Advanced novice girls, Basic novice B boys)
|
| 22 | Kanto Regional Championships 2014 | Nagano | 2014-09-25 | Controller (Junior ladies, Basic novice B girls)
|
| 23 | Kanto Regional Championships 2013 | Saitama | 2013-10-11 | Controller (Junior ladies, Basic novice B girls)
|
| 24 | Chubu Regional Championships 2013 | Aichi | 2013-09-27 | Referee (Senior men, Senior ladies, Junior men, Advanced novice boys, Advanced novice girls, Basic novice B boys)
|
| 25 | Japan Junior Championships 2012 | Nishitōkyō, Tokyo | 2012-11-17 | Judge (Junior ladies) |
| 26 | Kinki Regional Championships 2012 | Shiga | 2012-10-05 | Controller (Senior men, Junior ladies, Advanced novice girls)
|
| 27 | Japan Junior Championships 2011 | Hachinohe | 2011-11-25 | Judge (Junior men) |
| 28 | Japan Junior Championships 2009 | Yokohama | 2009-11-21 | Judge (Junior men) |
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