Maria appears (sings/talks) in the following miscellaneous CDs.

2017.03.15	Kobayashi-san chi no Maidragon Character Song Mini Album (LACA-15636)	Song
2018.03.14	Slow Start Character Song Album Step by Step (SVWC-70333)	Song
2021.09.22	Kobayashi-san chi no Maidragon S Character Song Album (LACA-15892)	Song