1. Round | 28/02/2021 | Mito HollyHock | - | Omiya Ardija | 1:2 | ||||
2. Round | 06/03/2021 | Omiya Ardija | - | Ventforet Kofu | 0:2 | ||||
9. Round | 21/04/2021 | Júbilo Iwata | - | Omiya Ardija | 3:2 | ||||
11. Round | 02/05/2021 | Tokyo Verdy | - | Omiya Ardija | 1:1 | ||||
12. Round | 05/05/2021 | Omiya Ardija | - | Albirex Niigata | 2:3 | ||||
13. Round | 09/05/2021 | Thespakusatsu Gunma | - | Omiya Ardija | 1:1 | ||||
14. Round | 16/05/2021 | Omiya Ardija | - | Fagiano Okayama | 0:0 | ||||
15. Round | 23/05/2021 | Giravanz Kitakyushu | - | Omiya Ardija | 3:1 | ||||
16. Round | 29/05/2021 | Omiya Ardija | - | JEF United Chiba | 0:2 | ||||
17. Round | 06/06/2021 | Zweigen Kanazawa | - | Omiya Ardija | 1:0 | ||||
20. Round | 27/06/2021 | Renofa Yamaguchi | - | Omiya Ardija | 0:1 | ||||
21. Round | 03/07/2021 | Omiya Ardija | - | Montedio Yamagata | 1:3 |