| Emperor's Cup 2023 - Appearances as Referee |  |
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 |
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| 07/06/2023 | Vegalta Sendai | - | Fujieda MyFC | 1:0 | - | - | - |
| 12/07/2023 | Avispa Fukuoka | - | FC Gifu | 2:1 aet | 1 | - | - |
| 02/08/2023 | Kawasaki Frontale | - | Kochi United | 1:0 | - | - | - |
| Emperor's Cup 2023 - Appearances as Referee | |
|
|
||||
| 07/06/2023 | Vegalta Sendai | - | Fujieda MyFC | 1:0 | - | - | - |
| 12/07/2023 | Avispa Fukuoka | - | FC Gifu | 2:1 aet | 1 | - | - |
| 02/08/2023 | Kawasaki Frontale | - | Kochi United | 1:0 | - | - | - |
| Complete name: | Koei Koya |
| Born: | |
| Place of birth: |
Japan |
| Nationality: |
Japan |