| Competition | City | Date | Roles |
|---|
| 1 | Japan Novice Championships 2017 | Otsu | 2017-10-20 | Judge (Basic novice B girls, Basic novice B boys) |
| 2 | Tokyo Regional Championships 2017 | Tokyo | 2017-09-21 | Judge (Senior men, Junior ladies, Advanced novice girls, Basic novice B boys) |
| 3 | Japan Junior Championships 2016 | Sapporo | 2016-11-18 | Judge (Junior men) |
| 4 | Tokyo Regional Championships 2016 | Tokyo | 2016-09-23 | Judge (Senior ladies, Junior men, Advanced novice boys, Basic novice B girls) |
| 5 | Eastern Section Championships 2015 | Gunma | 2015-10-29 | Judge (Senior ladies, Junior men) |
| 6 | Tokyo Regional Championships 2015 | Tokyo | 2015-09-24 | Judge (Senior men, Junior ladies, Advanced novice girls, Basic novice B boys) |
| 7 | Eastern Section Championships 2014 | Chiba | 2014-10-30 | Judge (Senior ladies, Junior men) |
| 8 | Tokyo Regional Championships 2014 | Tokyo | 2014-10-10 | Judge (Senior ladies, Senior men, Junior men, Advanced novice boys, Basic novice B boys) |
| 9 | Japan Novice Championships 2013 | Ibaraki | 2013-10-25 | Judge (Advanced novice boys, Advanced novice girls) |
| 10 | Tokyo Regional Championships 2013 | Tokyo | 2013-10-03 | Judge (Senior men, Senior ladies, Advanced novice girls, Basic novice B girls) |
| 11 | Western Section Championships 2012 | Fukuoka | 2012-11-01 | Judge (Senior men, Junior ladies) |
| 12 | Tokyo Regional Championships 2012 | Tokyo | 2012-10-05 | Judge (Senior ladies, Advanced novice girls, Advanced novice boys, Basic novice B boys, Basic novice B girls) |
| 13 | Japan Novice Championships 2011 | Tokyo | 2011-10-28 | Judge (Basic novice B girls, Basic novice B boys) |
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