Mika has done the following roles in audio drama.

Dragon Quest I CD Theater [CD]	Seirei Nerii
Idol Boueitai Hummingbird [CT, CD]	Toreishi Hazuki
Macross "Ginga ni furu yuki" [CD]	Misa
RG Veda [CD]	Soma
Silent Mobius "Silent Lovers" [CD]	Rosa Cheyenne