| 10. Round | 02/07/2023 | Sagan Tosu [U18] | - | Otsu High School [U18] | 2:4 | ||||
| 12. Round | 03/09/2023 | Shizuoka Gakuen [U18] | - | Otsu High School [U18] | 0:2 | ||||
| 13. Round | 10/09/2023 | Otsu High School [U18] | - | Yonago North High School [U18] | 0:2 | ||||
| 14. Round | 17/09/2023 | Otsu High School [U18] | - | Nagoya Grampus [U18] | 2:0 | ||||
| 15. Round | 24/09/2023 | Kamimura Gakuen [U18] | - | Otsu High School [U18] | 0:0 | ||||
| 16. Round | 30/09/2023 | Riseisha High School [U18] | - | Otsu High School [U18] | 0:6 |  |
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| 20. Round | 19/11/2023 | Sanfrecce Hiroshima [U18] | - | Otsu High School [U18] | 2:1 | ||||
| 21. Round | 26/11/2023 | Otsu High School [U18] | - | Sagan Tosu [U18] | 2:1 | ||||
| 22. Round | 03/12/2023 | Júbilo Iwata [U18] | - | Otsu High School [U18] | 0:4 |
Japan