| 1. Round | 02/04/2023 | Otsu High School [U18] | - | Shizuoka Gakuen [U18] | 1:5 | ||||
| 3. Round | 16/04/2023 | Otsu High School [U18] | - | Kamimura Gakuen [U18] | 3:5 |  |
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| 4. Round | 23/04/2023 | Nagoya Grampus [U18] | - | Otsu High School [U18] | 2:2 | ||||
| 5. Round | 07/05/2023 | Otsu High School [U18] | - | Riseisha High School [U18] | 6:3 | ||||
| 6. Round | 13/05/2023 | Otsu High School [U18] | - | Yokohama FC [U18] | 5:3 | ||||
| 7. Round | 20/05/2023 | Vissel Kobe [U18] | - | Otsu High School [U18] | 1:0 | ||||
| 11. Round | 09/07/2023 | Otsu High School [U18] | - | Júbilo Iwata [U18] | 1:3 | ||||
| 8. Round | 26/08/2023 | Higashi Fukuoka High School [U18] | - | Otsu High School [U18] | 2:2 | ||||
| 12. Round | 03/09/2023 | Shizuoka Gakuen [U18] | - | Otsu High School [U18] | 0:2 | ||||
| 15. Round | 24/09/2023 | Kamimura Gakuen [U18] | - | Otsu High School [U18] | 0:0 | ||||
| 20. Round | 19/11/2023 | Sanfrecce Hiroshima [U18] | - | Otsu High School [U18] | 2:1 | ||||
| 22. Round | 03/12/2023 | Júbilo Iwata [U18] | - | Otsu High School [U18] | 0:4 |
Japan