| Competition | City | Date | Roles |
|---|
| 1 | Chubu Regional Championships 2021 | Nagoya | 2021-09-24 | Referee (Senior men, Senior ladies, Junior men, Intermediate novice boys, Intermediate novice girls)
|
| 2 | Chubu Regional Championships 2019 | Nagoya | 2019-09-27 | Referee (Junior ladies, Advanced novice boys, Intermediate novice girls)
|
| 3 | Chubu Regional Championships 2018 | Nagoya | 2018-09-28 | Referee (Junior ladies, Advanced novice girls, Basic novice B boys)
|
| 4 | Chubu Regional Championships 2017 | Aichi | 2017-09-29 | Referee (Senior men, Senior ladies, Junior men, Advanced novice boys, Basic novice B boys, Basic novice B girls)
|
| 5 | Western Section Championships 2016 | Kyoto | 2016-10-28 | Judge (Senior men, Junior ladies) |
| 6 | Chubu Regional Championships 2016 | Aichi | 2016-09-30 | Referee (Senior ladies, Senior men, Junior men, Advanced novice boys, Basic novice B boys, Basic novice B girls)
|
| 7 | Tohoku-Hokkaido Regional Championships 2015 | Misawa | 2015-10-01 | Referee (Senior men, Senior ladies, Junior men, Advanced novice girls)
|
| 8 | Chubu Regional Championships 2014 | Aichi | 2014-10-03 | Referee (Senior ladies, Senior men, Junior men, Advanced novice girls)
|
| 9 | Western Section Championships 2013 | Kyoto | 2013-11-01 | Judge (Senior ladies, Junior men) |
| 10 | Chubu Regional Championships 2013 | Aichi | 2013-09-27 | Referee (Junior ladies, Basic novice B girls)
|
| 11 | Chubu Regional Championships 2012 | Aichi | 2012-09-28 | Referee (Senior ladies, Junior men, Advanced novice boys, Advanced novice girls, Basic novice B boys)
|
| 12 | Chubu Regional Championships 2011 | Aichi | 2011-09-30 | Judge (Junior ladies, Advanced novice boys, Basic novice B boys, Basic novice B girls) |
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