| Competition | City | Date | Roles |
|---|
| 1 | Western Section Championships 2016 | Kyoto | 2016-10-28 | Referee (Senior ladies, Junior men)
|
| 2 | Tohoku-Hokkaido Regional Championships 2016 | Hachinohe | 2016-10-08 | Referee (Junior ladies, Advanced novice boys, Advanced novice girls)
|
| 3 | Eastern Section Championships 2015 | Gunma | 2015-10-29 | Referee (Senior ladies, Junior men)
|
| 4 | Kanto Regional Championships 2015 | Chiba | 2015-10-08 | Referee (Junior ladies, Advanced novice boys, Basic novice B girls)
|
| 5 | Eastern Section Championships 2014 | Chiba | 2014-10-30 | Referee (Senior ladies, Junior men)
|
| 6 | Western Section Championships 2013 | Kyoto | 2013-11-01 | Referee (Senior men, Junior ladies)
|
| 7 | Tohoku-Hokkaido Regional Championships 2013 | Aomori | 2013-10-11 | Referee (Junior ladies, Basic novice B girls)
|
| 8 | Japan Novice Championships 2012 | Kyoto | 2012-10-26 | Referee (Basic novice B girls, Basic novice B boys)
|
| 9 | Japan Novice Championships 2011 | Tokyo | 2011-10-28 | Referee (Advanced novice boys, Advanced novice girls)
|
| 10 | Tokyo Regional Championships 2011 | Tokyo | 2011-10-08 | Referee (Senior ladies, Junior men, Advanced novice girls, Basic novice B boys)
|
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