Hiro has done the following roles in audio drama.

Barbarian Quartetto [CD] {Volume 3}	?
Double Call [CD]	?
Haoutaikei Ryuu Knight [CD]	Adieu
Lodoss Tou Senki Kaze to Honoo no Majin [CD]	Cecil
Madara -Ao Gilgamesh Saga [CD] {Vol 1}	Dyuu Karion
Mahou Gakuen Lunar [CD]	Win
Neon Genesis Evangelion [CD]	Makoto
Popful Mail The Next Generation [CD]	Tat
Rurouni Kenshin -Meiji Kenkaku Romantan- [CD] {Volume 2}	?
Shoujo Kakumei Utena Engage-Toi Mes Cont	Dios
Weiss Kreuz [CD]	Omi