| Competition | City | Date | Roles |
|---|
| 1 | Japan Junior Championships 2023 | Otsu | 2023-11-11 | Judge (Junior ladies) |
| 2 | Western Section Championships 2023 | Hiroshima | 2023-10-25 | Judge (Senior men, Junior ladies) |
| 3 | Kinki Regional Championships 2023 | Otsu | 2023-09-29 | Referee (Senior men, Junior ladies, Intermediate novice girls)
|
| 4 | Japan Junior Championships 2022 | Ibaraki | 2022-11-25 | Judge (Junior men) |
| 5 | Western Section Championships 2022 | Kyoto | 2022-10-27 | Judge (Senior ladies, Junior men) |
| 6 | Kinki Regional Championships 2022 | Amagasaki | 2022-10-08 | Judge (Senior men, Junior ladies, Advanced novice girls) |
| 7 | Japan Junior Championships 2021 | Nagoya | 2021-11-19 | Judge (Junior men) |
| 8 | Japan Novice Championships 2021 | Otsu, Shiga | 2021-10-24 | Judge (Advanced novice girls, Intermediate novice boys) |
| 9 | Kinki Regional Championships 2021 | Kyoto | 2021-10-07 | Judge (Senior men, Junior ladies, Advanced novice girls) |
| 10 | Japan Junior Championships 2020 | Hachinohe,Aomori | 2020-11-21 | Judge (Junior men) |
| 11 | Western Section Championships 2020 | Kyoto | 2020-10-30 | Judge (Senior ladies, Junior men) |
| 12 | Kinki Regional Championships 2020 | Osaka | 2020-10-02 | Judge (Senior ladies, Junior men, Advanced novice boys, Intermediate novice girls, Intermediate novice boys) |
| 13 | Japan Junior Championships 2019 | Kanagawa | 2019-11-15 | Judge (Junior men) |
| 14 | Western Section Championships 2019 | Otsu | 2019-11-01 | Judge (Senior ladies, Junior men) |
| 15 | Kinki Regional Championships 2019 | Shiga | 2019-10-03 | Referee (Senior ladies, Senior men, Junior men, Intermediate novice boys, Intermediate novice girls)
|
| 16 | Japan Junior Championships 2018 | Fukuoka | 2018-11-23 | Judge (Junior ladies) |
| 17 | Kinki Regional Championships 2018 | Osaka | 2018-10-05 | Referee (Senior ladies, Senior men, Junior men, Basic novice B boys, Basic novice B girls)
|
| 18 | Japan Junior Championships 2017 | Gunma | 2017-11-24 | Judge (Junior men) |
| 19 | Shu-Shikoku-Kyushu Regional Championships 2017 | Fukuoka | 2017-10-06 | Referee (Senior ladies, Junior ladies, Advanced novice boys)
|
| 20 | Japan Junior Championships 2016 | Sapporo | 2016-11-18 | Judge (Junior ladies) |
| 21 | Kinki Regional Championships 2016 | Osaka | 2016-10-08 | Referee (Senior men, Senior ladies, Junior men, Advanced novice boys, Basic novice B boys)
|
| 22 | Western Section Championships 2015 | Aichi | 2015-10-31 | Judge (Senior ladies, Junior men) |
| 23 | Shu-Shikoku-Kyushu Regional Championships 2015 | Okayama | 2015-10-01 | Judge (Senior men, Senior ladies, Advanced novice boys, Basic novice B girls, Basic novice B boys) |
| 24 | Japan Junior Championships 2014 | Niigata | 2014-11-22 | Judge (Junior ladies) |
| 25 | Japan Junior Championships 2013 | Nagoya | 2013-11-22 | Judge (Junior ladies) |
| 26 | Japan Novice Championships 2012 | Kyoto | 2012-10-26 | Judge (Basic novice B girls, Basic novice B boys) |
| 27 | Japan Junior Championships 2011 | Hachinohe | 2011-11-25 | Judge (Junior ladies) |
| 28 | Western Section Championships 2011 | Kyoto | 2011-11-03 | Judge (Senior men, Junior ladies) |
| 29 | Japan Championships 2010 | Nagano | 2010-12-24 | Judge (Senior men) |
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