Masako has done the following roles in audio drama.

Angelique [CD]	?
Beast of East [CD]	?
Garzey no Tsubasa [CD]	Rumiko
Kouryuu no Mimi [CD]	Margaret
Marouou Fuu'unden [?]	?
Megami Paradise [CD]	Yamimega
Next King -Koi no Sennen Oukoku- Gaiden [CD]	Charaway
Vampire Hunter Gaiden: Shukumei no tabibito Donovan [CD]	Shanburou