| Competition | City | Date | Roles |
|---|
| 1 | Japan Junior Championships 2019 | Kanagawa | 2019-11-15 | Judge (Junior men) |
| 2 | Chu-Shikoku-Kyushu Regional Championships 2019 | Fukuoka | 2019-09-26 | Judge (Senior ladies, Junior ladies, Advanced novice boys) |
| 3 | Japan Junior Championships 2018 | Fukuoka | 2018-11-23 | Judge (Junior ladies) |
| 4 | Japan Novice Championships 2018 | Osaka | 2018-10-19 | Judge (Basic novice B boys, Basic novice B girls) |
| 5 | Japan Junior Championships 2017 | Gunma | 2017-11-24 | Judge (Junior ladies) |
| 6 | Japan Novice Championships 2017 | Otsu | 2017-10-20 | Judge (Basic novice B girls, Basic novice B boys) |
| 7 | Japan Junior Championships 2016 | Sapporo | 2016-11-18 | Judge (Junior ladies) |
| 8 | Western Section Championships 2016 | Kyoto | 2016-10-28 | Judge (Senior men, Junior ladies) |
| 9 | Shu-Shikoku-Kyushu Regional Championships 2016 | Okayama | 2016-09-23 | Judge (Senior men, Junior men, Advanced novice girls, Basic novice B girls, Basic novice B boys) |
| 10 | Western Section Championships 2015 | Aichi | 2015-10-31 | Judge (Senior ladies, Junior men) |
| 11 | Shu-Shikoku-Kyushu Regional Championships 2015 | Okayama | 2015-10-01 | Judge (Senior men, Senior ladies, Advanced novice boys, Basic novice B boys, Basic novice B girls) |
| 12 | Western Section Championships 2014 | Fukuoka | 2014-10-31 | Judge (Senior ladies, Junior men) |
| 13 | Shu-Shikoku-Kyushu Regional Championships 2013 | Fukuoka | 2013-10-03 | Judge (Junior ladies, Advanced novice girls) |
| 14 | Western Section Championships 2012 | Fukuoka | 2012-11-01 | Judge (Senior ladies, Junior men) |
| 15 | Shu-Shikoku-Kyushu Regional Championships 2012 | Shimane | 2012-10-11 | Judge (Senior ladies, Senior men, Junior men, Advanced novice boys, Advanced novice girls, Basic novice B boys) |
| 16 | Western Section Championships 2011 | Kyoto | 2011-11-03 | Judge (Senior men, Junior ladies) |
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