Midorikawa Hikaru CDs (singles)
Hikaru appears (sings/talks) in the following CD singles.
| 1997.05.21 | Mecha Hajikete Guts Tobashite (TYDY-2085) | Song |
| 1997.07.19 | Mountain (COCC-14455) | Song |
| 1997.08.?? | Cage II | talk |
| 1997.11.01 | Sotsugyou M voice message Arai Tougo (CODC-1352) | talk |
| 1998.12.01 | Heart ha Koukiatsu [E.M.U.] (CODC-1673) | Song |
| 1999.05.01 | Sotsugyou M character CD special 1 () | Song |
| 1999.05.01 | Sotsugyou M character CD special 2 () | Song |
| 2003.07.02 | Tokimeki Memorial Girl's Side Clovers' Graffiti 1 (KMCM-23) | song |