Yoko has done the following roles in audio drama.

Aozora Shoujotai [CD] {Aozora Douchuu}	Mejiro Mayumi
First Kiss Monogatari [CD]	?
Happy Boy [CD]	narration
Heian Mato Karakuri Kidan [radio]	Murasaki Shikibu Shinpa
Jajauma Quartette [radio]	Casa Clover 17th
Kare first love [CD]	?
Luna Silver Story Lunatic Festa [CD] {Vol 2}	Mia
Madara -Ao Gilgamesh Saga [CD] {Vol 1}	Pyura
Minna de tsukuru Yuukyuu CD! [CD]	?
Pocket Love [CD]	Takemiya Saki
Radish Roxs [CD]	Yuuki Naomi
Yuukyuu Gensoukyoku "Yuukyuu Ongakusai" [CD]	?
Yuukyuu Gensoukyoku THE BEST -Selected by Characters- [CD]	Diana Rainey