| Competition | City | Date | Roles |
|---|
| 1 | Kanto Regional Championships 2016 | Ibaraki | 2016-09-30 | Referee (Junior ladies, Advanced novice boys, Basic novice B girls)
|
| 2 | Tokyo Regional Championships 2015 | Tokyo | 2015-09-24 | Controller (Senior ladies, Junior men, Advanced novice boys, Basic novice B girls)
|
| 3 | Eastern Section Championships 2014 | Chiba | 2014-10-30 | Judge (Senior ladies, Junior men) |
| 4 | Kanto Regional Championships 2013 | Saitama | 2013-10-11 | Judge (Senior ladies, Senior men, Junior men, Advanced novice girls, Advanced novice boys, Basic novice B boys) |
| 5 | Tokyo Regional Championships 2013 | Tokyo | 2013-10-03 | Controller (Senior ladies, Senior men, Advanced novice girls, Basic novice B girls)
|
| 6 | Japan Junior Championships 2012 | Nishitōkyō, Tokyo | 2012-11-17 | Judge (Junior ladies) |
| 7 | Tokyo Regional Championships 2012 | Tokyo | 2012-10-05 | Judge (Senior ladies, Advanced novice boys, Advanced novice girls, Basic novice B girls, Basic novice B boys) |
| 8 | Tokyo Regional Championships 2011 | Tokyo | 2011-10-08 | Judge (Senior ladies, Junior men, Advanced novice girls, Basic novice B boys) |
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