| 1998.12.23 | Kareshi Kanojo no Jijou Original Soundtrack (KICA-440) | Song |
| 1999.03.26 | Setsu Getsu Ka (KICA-452) | Song |
| 1999.07.07 | Sensei no Ojikan 1 Jikanme (AVCT-15004) | Talk |
| 1999.08.04 | Sensei no Ojikan 2 Jikanme (AVCT-15009) | Talk/Song |
| 1999.08.21 | Triangle Session 99 Drama CD Stage 1 (MMCM-0009) | Song/Talk |
| 1999.11.25 | Sensei no Ojikan Volume 4 (AVCT-15013) | Talk |
| 1999.11.25 | Triangle Session 99 Vocal Mini Album (MMCC-0011) | Song |
| 2000.01.26 | Triangle Session Volume 3 (MMCC-0014) | Talk |
| 2000.04.19 | Koutetsu Tenshi Kurumi Soundtrack (PCCG-532) | Song |
| 2001.08.22 | Angelic Layer Character Song Album (AVCA-14190) | Song |
| 2001.10.03 | Chance Triangle Session Vocal Album (AVCA-14227) | Song |
| 2004.01.21 | Ryo-ko Sensei no Shinryoushitu (WWCE-31017) | Talk |
| 2004.08.25 | Memories Off -Sorekara- Drama CD (KDCA-12) | Talk |
| 2004.12.22 | Memories Off -Sorekara- Vocal Collection (KDCA-26) | Song |