| Competition | City | Date | Roles |
|---|
| 1 | Eastern Section Championships 2018 | Hachinohe | 2018-10-25 | Referee (Senior men, Junior ladies)
|
| 2 | Chubu Regional Championships 2018 | Nagoya | 2018-09-28 | Controller (Senior ladies, Senior men, Junior men, Advanced novice boys, Basic novice B girls)
|
| 3 | Japan Championships 2017 | Tokyo | 2017-12-19 | Judge (Senior men) |
| 4 | Eastern Section Championships 2017 | Yamanashi | 2017-10-26 | Specialist (Senior men)
Assistant (Junior ladies)
|
| 5 | Chubu Regional Championships 2017 | Aichi | 2017-09-29 | Controller (Senior ladies, Senior men, Junior men, Advanced novice boys, Basic novice B boys, Basic novice B girls)
|
| 6 | Japan Championships 2016 | Osaka | 2016-12-22 | Assistant (Senior ladies)
|
| 7 | Western Section Championships 2016 | Kyoto | 2016-10-28 | Specialist (Junior ladies)
Assistant (Senior men)
|
| 8 | Chubu Regional Championships 2016 | Aichi | 2016-09-30 | Controller (Senior ladies, Senior men, Junior men, Advanced novice boys, Basic novice B boys, Basic novice B girls)
|
| 9 | Japan Championships 2015 | Hokkaido | 2015-12-24 | Judge (Senior ladies) |
| 10 | Japan Junior Championships 2015 | Ibaraki | 2015-11-21 | Assistant (Junior men)
|
| 11 | Kinki Regional Championships 2015 | Otsu | 2015-10-09 | Controller (Senior ladies, Senior men, Junior men, Advanced novice boys)
|
| 12 | Chubu Regional Championships 2015 | Aichi | 2015-09-25 | Specialist (Senior ladies)
Assistant (Senior men, Junior men, Advanced novice girls)
|
| 13 | Japan Championships 2014 | Nagano | 2014-12-25 | Judge (Senior ladies) |
| 14 | Western Section Championships 2014 | Fukuoka | 2014-10-31 | Specialist (Senior ladies)
Assistant (Junior men)
|
| 15 | Kinki Regional Championships 2014 | Osaka | 2014-10-10 | Controller (Senior ladies, Senior men, Junior men, Basic novice B girls)
|
| 16 | Japan Championships 2013 | Saitama | 2013-12-20 | Judge (Senior men) |
| 17 | Japan Junior Championships 2013 | Nagoya | 2013-11-22 | Assistant (Junior ladies)
|
| 18 | Tohoku-Hokkaido Regional Championships 2013 | Aomori | 2013-10-11 | Specialist (Senior ladies, Advanced novice boys, Basic novice B boys)
Assistant (Senior men, Junior men, Advanced novice girls)
|
| 19 | Chubu Regional Championships 2013 | Aichi | 2013-09-27 | Specialist (Senior ladies, Senior men, Advanced novice boys, Basic novice B boys)
Assistant (Junior men, Advanced novice girls)
|
| 20 | Western Section Championships 2012 | Fukuoka | 2012-11-01 | Specialist (Junior ladies)
Assistant (Senior men)
|
| 21 | Tohoku-Hokkaido Regional Championships 2012 | Hokkaido | 2012-10-12 | Specialist (Senior ladies, Senior men, Junior men)
Assistant (Advanced novice boys, Basic novice B girls)
|
| 22 | Chubu Regional Championships 2012 | Aichi | 2012-09-28 | Judge (Senior men, Junior ladies, Basic novice B girls) |
| 23 | Japan Junior Championships 2011 | Hachinohe | 2011-11-25 | Judge (Junior men) |
| 24 | Kinki Regional Championships 2011 | Osaka | 2011-10-08 | Specialist (Senior ladies, Advanced novice girls)
Assistant (Senior men, Junior men)
|
| 25 | Chubu Regional Championships 2011 | Aichi | 2011-09-30 | Judge (Junior ladies, Advanced novice boys, Basic novice B boys, Basic novice B girls) |
| 26 | Japan Junior Championships 2008 | Nagoya | 2008-11-23 | Assistant (Junior men)
|
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