| 48.98 | 6 | 62nd Gunma Prefecture Middle School Competition | 05. - 06.01.2019 | Shibukawa (JPN) |
| 49.82 | 7 | 61st Gunma Prefecture JHS Competition | 06. - 07.01.2018 | Shibukawa (JPN) |
| 51.51 | 23 | 15th Korea-Japan Youth Exchange | 24.02.2017 | Seoul (KOR) |
| 52.07 | 5 | 39th Gunma Prefecture Junior High School Rookie Tournament | 14.02.2017 | Shibukawa (JPN) |
| 52.49 | 26 | 15th Japan-Korea Youth Exchange | 11.01.2017 | Morioka (JPN) |
| 48.72 | 8 | 60th Gunma Prefecture JHS Competition | 27. - 28.12.2016 | Shibukawa (JPN) |
| 50.81 | 14 | 36th Gunma Prefecture Selection | 17.12.2016 | Shibukawa (JPN) |