| 7. Jornada | 10.04.2021 | Blaublitz Akita | - | RB Omiya Ardija | 0:0 | ||||
| 8. Jornada | 17.04.2021 | RB Omiya Ardija | - | Ehime FC | 0:1 | ||||
| 9. Jornada | 21.04.2021 | Júbilo Iwata | - | RB Omiya Ardija | 3:2 | ||||
| 10. Jornada | 25.04.2021 | RB Omiya Ardija | - | FC Machida Zelvia | 0:1 | ||||
| 11. Jornada | 02.05.2021 | Tokyo Verdy | - | RB Omiya Ardija | 1:1 | ||||
| 12. Jornada | 05.05.2021 | RB Omiya Ardija | - | Albirex Niigata | 2:3 | ||||
| 13. Jornada | 09.05.2021 | Thespakusatsu Gunma | - | RB Omiya Ardija | 1:1 |
Serbia