| J2 League 2023 - Appearances as Assistant | ||||
| 21/05/2023 | Zweigen Kanazawa | - | Ventforet Kofu | 0:1 |
| 06/08/2023 | Júbilo Iwata | - | Vegalta Sendai | 4:1 |
| 15/09/2023 | Ventforet Kofu | - | Tokyo Verdy | 1:1 |
| J2 League 2023 - Appearances as Assistant | ||||
| 21/05/2023 | Zweigen Kanazawa | - | Ventforet Kofu | 0:1 |
| 06/08/2023 | Júbilo Iwata | - | Vegalta Sendai | 4:1 |
| 15/09/2023 | Ventforet Kofu | - | Tokyo Verdy | 1:1 |
| Complete name: | Osamu Akasaka |
| Born: | 26/09/1985 |
| Place of birth: |
Japan |
| Nationality: |
Japan |
| Club: | SC Borussia Lindenthal-Hohenlind |