Kazuhiko has done the following roles in audio drama.

Aoi Gakuen Playtime [?]	?
Arashi no Destiny [CD]	?
B Gata Doumei Drama Album [CD]	Black
Den'ei Shoujo Video Girl Ai [CD]	Niimai Takashi
Earthian [CD]	Kageaya
Emerald Dragon [CD]	Husrum
Fire Emblem [CD]	?
First Kiss Monogatari [CD]	?
Gall Force Earth Chapter Back to the school wars [CD]	Bauer
Gekkou no Pierce [CD]	Suzukage Seiki
Koko wa Green Wood [CD]	Hasukawa Kazuhiro
Lodoss Tou Senki [CD, CT] {Volume 4}	?
Mugen Chitai Megazone 23 Image Album "Ushinawareta season" [CD]	?
Outo Ayakashi Kitan [CD]	Abe Seimei
Rurouni Kenshin -Meiji Kenkaku Romantan- [CD] {Volume 2}	?
Shining Force Exa [CD]	Gadofall
Shinsengumi Ibun Aoki Ookamitachi no Shinwa 2 "Asagiiro no yoake" [CD]	Sakamoto Ryuuma
Shinsengumi Ibun Aoki Ookamitachi no Shinwa Ongaku Special "Makoto" [CD]	Sakamoto Ryuuma
Shinsengumi Ibun Aoki Ookamitachi no Shinwa Ongaku Special "Makoto" [CD]	Sakamoto Ryuuma ni nita otoko
Tales of Phantasia [CD]	Klarth F. Lester
Ten ha Akai Kawa no Hotori [CD]	Kyle