| 27. Jornada | 23.07.2023 | Mito HollyHock | - | RB Omiya Ardija | 0:0 | ||||
| 28. Jornada | 30.07.2023 | Zweigen Kanazawa | - | RB Omiya Ardija | 1:2 |  |
|||
| 29. Jornada | 06.08.2023 | RB Omiya Ardija | - | Blaublitz Akita | 1:0 | ||||
| 30. Jornada | 13.08.2023 | RB Omiya Ardija | - | Fagiano Okayama | 1:1 | ||||
| 31. Jornada | 19.08.2023 | Vegalta Sendai | - | RB Omiya Ardija | 1:0 | ||||
| 32. Jornada | 26.08.2023 | RB Omiya Ardija | - | V-Varen Nagasaki | 0:4 | ||||
| 33. Jornada | 03.09.2023 | Montedio Yamagata | - | RB Omiya Ardija | 1:1 | |
 |
||
| 34. Jornada | 09.09.2023 | Júbilo Iwata | - | RB Omiya Ardija | 3:2 | |
|||
| 35. Jornada | 16.09.2023 | RB Omiya Ardija | - | Roasso Kumamoto | 0:3 | ||||
| 37. Jornada | 30.09.2023 | Oita Trinita | - | RB Omiya Ardija | 0:1 | |
Polonia