| 45.80 | 9 | 35th Hokkaido Junior Games | 19. - 20.01.2013 | Akan (JPN) |
| 43.94 | 14 | 43rd Hokkaido Junior High School Competition | 12. - 13.01.2013 | Obihiro (JPN) |
| 47.39 | 15 | 10th World Junior Championship 2003 Memorial - Hokkaido Jhs And Es Competition | 08. - 09.12.2012 | Kushiro (JPN) |
| 46.94 | 6 | Badge Test Meeting 2 | 24.11.2012 | Kushiro (JPN) |
| 47.51 | 9 | Badge Test Meeting 1 | 17.11.2012 | Kushiro (JPN) |
| 46.88 | 44 | 2012 Obihiro Forest Competition | 10. - 11.11.2012 | Obihiro (JPN) |
| 49.09 | 12 | 9th Kushiro Final Competition | 25. - 26.02.2012 | Kushiro (JPN) |
| 49.40 | 23 | 34th Hokkaido Junior Games | 14. - 15.01.2012 | Akan (JPN) |
| 49.31 | 30 | 9th World Junior Championship 2003 Memorial | 10. - 11.12.2011 | Kushiro (JPN) |
| 51.13 | 11 | Badge Test Meeting 1 | 20.11.2011 | Kushiro (JPN) |
| 51.22 | 21 | 8th Kushiro Final Competition | 26. - 27.02.2011 | Kushiro (JPN) |
| 49.75 | 19 | 50th East Hokkaido Competition | 05.02.2011 | Kushiro (JPN) |
| 53.01 | 5 | 28th New Member Conference | 28.02.2010 | Kushiro (JPN) |