| 12. Round | 05/05/2021 | Tochigi SC | - | Giravanz Kitakyushu | 1:2 | ||||
| 13. Round | 09/05/2021 | Giravanz Kitakyushu | - | V-Varen Nagasaki | 0:1 |  |
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| 14. Round | 16/05/2021 | Tokyo Verdy | - | Giravanz Kitakyushu | 2:0 |  |
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| 16. Round | 30/05/2021 | FC Machida Zelvia | - | Giravanz Kitakyushu | 0:1 | ||||
| 17. Round | 05/06/2021 | Giravanz Kitakyushu | - | Júbilo Iwata | 0:2 | ||||
| 18. Round | 13/06/2021 | FC Ryūkyū | - | Giravanz Kitakyushu | 3:0 | ||||
| 19. Round | 20/06/2021 | Giravanz Kitakyushu | - | Ehime FC | 0:2 | |
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| 20. Round | 26/06/2021 | Giravanz Kitakyushu | - | JEF United Chiba | 0:0 | ||||
| 21. Round | 03/07/2021 | SC Sagamihara | - | Giravanz Kitakyushu | 0:0 | ||||
| 22. Round | 11/07/2021 | Giravanz Kitakyushu | - | Kyoto Sanga FC | 0:2 | ||||
| 23. Round | 17/07/2021 | V-Varen Nagasaki | - | Giravanz Kitakyushu | 3:2 | ||||
| 39. Round | 13/11/2021 | Renofa Yamaguchi | - | Giravanz Kitakyushu | 0:1 | ||||
| 40. Round | 21/11/2021 | JEF United Chiba | - | Giravanz Kitakyushu | 2:0 | ||||
| 41. Round | 28/11/2021 | Giravanz Kitakyushu | - | Tochigi SC | 1:2 |
Japan