Gameplan
| Date | Round | Match | Match | Res. | Attendance | |
|---|---|---|---|---|---|---|
| 02.04.2005 |  | Matchday 3 | RB Omiya Ardija - Cerezo | Omi - Cer | 1:0 | 7.006 |
| 17.04.2005 | | Matchday 6 | RB Omiya Ardija - Verdy | Omi - Ver | 2:3 | 8.959 |
| 28.04.2005 | | Matchday 8 | RB Omiya Ardija - Oita Trinita | Omi - Oit | 3:1 | 5.129 |
| 17.09.2005 | | Matchday 24 | RB Omiya Ardija - JEF United | Omi - JEF | 0:1 | 7.881 |
| 23.11.2005 | | Matchday 32 | RB Omiya Ardija - Gamba | Omi - Gam | 1:0 | 10.623 |