| 46.44 | 13 | 15th Korea-Japan Youth Exchange | 24.02.2017 | Seoul (KOR) |
| 47.61 | 2 | 54th Aomori Prefecture Junior High School Rookie Tournament | 11. - 12.02.2017 | Hachinohe (JPN) |
| 48.42 | 20 | 15th Japan-Korea Youth Exchange | 11.01.2017 | Morioka (JPN) |
| 47.88 | 2 | 67th Aomori Prefecture JHS Competition | 04.01.2017 | Hachinohe (JPN) |
| 49.88 | 6 | 38th Tohoku JHS Competition | 23. - 25.12.2016 | Kōriyama (JPN) |
| 49.03 | 4 | 36th Aomori Prefecture Junior Sprint Championship | 17. - 18.12.2016 | Hachinohe (JPN) |
| 52.81 | 2 | 2016 Tohoku JHS - Aomori Prefecture Qualification | 06. - 07.12.2016 | Hachinohe (JPN) |
| 49.27 | 1 | 3rd Nagane Elementary School Competition | 13.02.2016 | Hachinohe (JPN) |
| 48.81 | 1 | 40th Aomori Vs Tochigi Elementary School Meeting | 06.02.2016 | Nikkō (JPN) |
| 51.73 | 1 | 21th Nagane Gold Sprint - ABA Cup | 30. - 31.01.2016 | Hachinohe (JPN) |
| 54.76 | 5 | 39th Aomori Prefecture - Tochigi Prefecture Elementary School Meeting | 07.02.2015 | Hachinohe (JPN) |
| 56.63 | 3 | ABA Cup Gold Sprint | 24. - 25.01.2015 | Hachinohe (JPN) |
| 1:02.40 | 8 | 20th ABA Gold Cup Sprint | 01. - 02.02.2014 | Hachinohe (JPN) |