| Kumasaka Koki | ||
| Birth Date | 2001-04-15 (age 25) | |
| Birth Place |  |
Saitama |
| Height | 185 cm | |
| Weight | 80 kg | |
| Position | Midfielder | |
| Club | |
Kashiwa Reysol |
| Number | 27 | |
| Club Statistics | ||||||
| Season | Club | No. | League | Game | Goal | |
| 2024 | |
Kashiwa Reysol | 27 | J1 | 10 | 0 |
| 2025 | |
Kashiwa Reysol | 27 | J1 | 18 | 0 |
| 2026-27 | |
Kashiwa Reysol | 27 | J1 | ||
| Total | J1 | 28 | 0 | |||
| J2 | 0 | 0 | ||||
| J3 | 0 | 0 | ||||
