Michiko has done the following roles in audio drama.

Angel Force [CD]	?
Arashi no Destiny [CD] {Volume 1-2}	Serasutiia
Calm Breaker [CD]	Arita Chisato
Can Can Bunny Extra [CD]	?
Choukou Senki Kikaiou [CD]	Amamiya Reika
Cinematic Sound Drama GetBackers [CD]	?
Cluster [CD]	Pauru Tribe
Dancing Whispers [CD]	Tenkuu no Shanmille
Dark Edge [CD, Radio]	Akasaka Miki
Digital Ange Dennou Tenshi SS [radio]	Melkyuul
El Hazard [CD]	Myuun
Fake [CD]	Alicia Grant
Fam & Ihrlie [CD]	Ihrlie
Fire Emblem [CD]	?
Gear Senshi Dendou (Gear Fighter Dendoh) [CD] {File 2}	Izumo Otome
Gun Smith Cats [CD]	Rally Vincent
Himitsu Sentai Metamor V [CD]	?
Hoshi no Oka Gakuen Monogatari Gakuensai [CD, Radio] {Volume 1}	Natori Erika
Hourai Gakuen no Hatsukoi! [CD]	Student
Jojo's Bizarre Adventure [CD] {Volume 2}	?
Kuro Kami no Captured [CD]	?
Momo Iro Sisters Office Version [CD]	Kuragata Yuki
Noel La Neige Message -Mada minu anata he- [CD]	Midorikawa Ryou
Over Rev! [CD]	Morita Sawako
Popful Mail The Next Generation [CD]	geigi
Quo Vadis [CD] {Volume 1-6}	?
Rurouni Kenshin -Meiji Kenkaku Romantan- [CD] {Volume 2}	?
Saiyuuki [CD]	?
Sampaguita [CD]	?
Sensei ga Iroiro to Nesshin de Nemurenai CD [CD]	Iria
Tohshinden -Before Stage- [CD]	Emi
Trouble Shooter Sheriff Stars [CD]	Miretta
Tsubasa wo motsu mono [CD]	?
Vandread [CD]	?
Yonde yaru ze! [CD] {Volume 1}	?