Hideo has done the following roles in audio drama.

Dark Hunter -Ijigen Gakuen [CD]	?
Marriage -Kekkon [CD]	Katou Yuusuke
Money Idol Exchanger [CD]	Sakata-sensei (Maaka Mookarii)
Sotsugyou Cross World All Stars On Stage [CD]	Katou Yuusuke
Sotsugyou M Oretachi ni Makasero [CD]	Katou Yuusuke
Sotsugyou M+ (Male Graduation Plus) Final Drama CD -Oretachi no Sotsugyou- [CD]	Katou Yuusuke
Time Leap [CD]	Seki Takashi
Wedding Dress ni Akai Bara [CD]	Ohiwa Goutarou