Tetsuya has done the following roles in audio drama.

Barbarian Quartetto [CD] {Volume 3}	?
El Hazard [CD]	Mizuhara Makoto
Garzey no Tsubasa [CD]	Christopher
Mahou Shoujo Fancy CoCo [CD]	Rai Mu
Neon Genesis Evangelion [CD]	Kensuke
Street Fighter EX [radio]	Ken