| 43.40 | 12 | Tokachi Rookie Record Meetings | 03.03.2018 | Obihiro (JPN) |
| 43.14 | 26 | 3rd Time Trial | 20.01.2018 | Obihiro (JPN) |
| 44.84 | 7 | 40th Hokkaido Shonendan Games | 13. - 14.01.2018 | Akan (JPN) |
| 45.35 | 19 | 64th Tokachi JHS Championship | 02. - 03.12.2017 | Obihiro (JPN) |
| 45.70 | 14 | Tokachi Record Meetings | 26.02.2017 | Obihiro (JPN) |
| 46.14 | 24 | 63rd Tokachi Middle School Championship | 03. - 04.12.2016 | Obihiro (JPN) |
| 47.51 | 8 | 2nd All Japan Novice Competition | 13. - 14.02.2016 | Sapporo (JPN) |
| 49.11 | 27 | 38th Hokkaido Shonendan Competitions | 16. - 17.01.2016 | Akan (JPN) |
| 51.37 | 15 | 13th World Junior Memorial | 12. - 13.12.2015 | Kushiro (JPN) |
| 55.92 | 33 | 1st Japan Novice Competition | 14. - 15.02.2015 | Sapporo (JPN) |
| 59.17 | 25 | 20th Akan Junior Sprint Championships | 02. - 03.02.2013 | Akan (JPN) |