| 40.50 | 19 | 35th National Junior High School Competition | 02. - 03.02.2015 | Nagano (JPN) |
| 1:01.61 | 24 | 45th Hokkaido Junior High School Competition | 11. - 12.01.2015 | Sapporo (JPN) |
| 41.83 | 4 | 12th World Junior Championships Memorial | 13. - 14.12.2014 | Kushiro (JPN) |
| 43.47 | 9 | 10th Kushiro Final Atlethic Meet | 22. - 23.02.2014 | Kushiro (JPN) |
| 45.63 | 20 | 53 East Hokkaido Competition | 25.01.2014 | Nemuro (JPN) |
| 45.78 | 23 | 39th Akan Junior Competition / 21th Akan Junior Sprint Championships | 09. - 10.01.2014 | Akan (JPN) |
| 46.52 | 20 | 39th Akan Junior Competition / 21th Akan Junior Sprint Championships | 09. - 10.01.2014 | Akan (JPN) |
| 44.71 | 46 | 3rd Time Trial | 23. - 24.11.2013 | Obihiro (JPN) |
| 47.41 | 18 | 52nd East Hokkaido Competition | 26. - 27.01.2013 | Kitami (JPN) |
| 48.81 | 21 | 35th Hokkaido Junior Games | 19. - 20.01.2013 | Akan (JPN) |
| DNS | - | 10th World Junior Championship 2003 Memorial - Hokkaido Jhs And Es Competition | 08. - 09.12.2012 | Kushiro (JPN) |