| Competition | City | Date | Roles |
|---|
| 1 | Tohoku-Hokkaido Regional Championships 2020 | Niigata | 2020-10-10 | Referee (Junior ladies, Intermediate novice boys)
|
| 2 | Japan Junior Championships 2018 | Fukuoka | 2018-11-23 | Judge (Junior ladies) |
| 3 | JGP Ljubljana 2018 | Ljubljana | 2018-10-03 | Judge (Junior men) |
| 4 | Tohoku-Hokkaido Regional Championships 2018 | Sapporo | 2018-09-21 | Judge (Junior ladies, Advanced novice girls, Advanced novice boys) |
| 5 | Japan Championships 2017 | Tokyo | 2017-12-19 | Judge (Senior men) |
| 6 | Tohoku-Hokkaido Regional Championships 2017 | Niigata | 2017-09-21 | Referee (Senior men, Senior ladies, Junior men, Basic novice B boys, Basic novice B girls)
|
| 7 | JGP Brisbane 2017 | Brisbane | 2017-08-23 | Judge (Junior men) |
| 8 | Japan Championships 2015 | Hokkaido | 2015-12-24 | Judge (Senior ladies) |
| 9 | JGP Logrono 2015 | Logroño | 2015-09-30 | Judge (Junior men) |
| 10 | Japan Championships 2014 | Nagano | 2014-12-25 | Judge (Senior men) |
| 11 | Tohoku-Hokkaido Regional Championships 2014 | Hokkaido | 2014-10-02 | Referee (Senior ladies, Senior men, Junior men, Advanced novice girls)
|
| 12 | JGP Nagoya TV Cup 2014 | Aichi | 2014-09-11 | Judge (Junior men) |
| 13 | Japan Championships 2013 | Saitama | 2013-12-20 | Judge (Senior ladies) |
| 14 | Tohoku-Hokkaido Regional Championships 2013 | Aomori | 2013-10-11 | Referee (Senior ladies, Senior men, Junior men, Advanced novice boys, Advanced novice girls, Basic novice B boys)
|
| 15 | JGP Minsk 2013 | Minsk | 2013-09-25 | Judge (Junior men) |
| 16 | Japan Championships 2012 | Sapporo | 2012-12-20 | Judge (Senior men) |
| 17 | Tohoku-Hokkaido Regional Championships 2012 | Hokkaido | 2012-10-12 | Referee (Senior men, Senior ladies, Junior men, Advanced novice boys, Basic novice B girls)
|
| 18 | JGP Bled 2012 | Bled | 2012-09-26 | Judge (Junior ladies) |
| 19 | Japan Junior Championships 2011 | Hachinohe | 2011-11-25 | Judge (Junior men) |
| 20 | Tohoku-Hokkaido Regional Championships 2011 | Aomori | 2011-10-12 | Referee (Senior ladies, Senior men, Junior men, Advanced novice girls)
|
| 21 | JGP Trofeo Walter Lombardi 2011 | Milano | 2011-10-05 | Judge (Junior men) |
| 22 | Japan Junior Championships 2010 | Hitachinaka | 2010-11-26 | Judge (Junior ladies) |
| 23 | Finlandia Trophy 2010 | Vantaa | 2010-10-07 | Judge (Senior ladies, Senior men) |
| 24 | JGP John Curry Memorial 2008 | Sheffield | 2008-10-15 | Judge (Junior men) |
| 25 | JGP Croatia Cup 2007 | Zagreb | 2007-09-26 | Judge (Junior ladies) |
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