Nagai Mariko CDs (miscellaneous)
Mariko appears (sings/talks) in the following miscellaneous CDs.
| 2021.03.10 | The Idolm@ster Shiny Colors Colorful Fe@thers -Sol- (LACA-15863) | Song |
| 2024.10.30 | Happy Surprise Trick! (LACA-25127) | Song |
| 2025.12.24 | Shiny Colors Song for Prism Borderline (LACA-25180) | Song |
| 2026.01.28 | Shiny Colors Song for Prism Queen of the Pirates (LACA-25234) | Song |