Sawai Natsumi CDs (miscellaneous)
Natsumi appears (sings/talks) in the following miscellaneous CDs.
| 1998.12.05 | Touch Miss Lonely Yesterday Arekara Kimi ha.. (VPCG-84667) | Song |
| 1999.12.27 | Kira Kira Melody Gakuen Drama CD Super Flying Version (KIRA-1999) | Talk |
| 2000.03.25 | Kira Kira Melody Gakuen drama CD 1 (MACM-1080) | Talk |
| 2000.04.25 | Shin Masou Kishin Panzer Warfare (LACA-5002) | Song |
| 2000.08.05 | Kira Kira Melody Gakuen drama CD Dai Ichibu Kanketsuhen (KIRA-2000) | Talk |
| 2000.08.30 | Daisuki [Kira Kira Melody Gakuen] (ZMCZ-1118) | Song |
| 2001.02.28 | Dear+Palette-Che (MACM-1122) | Song |
| 2001.07.28 | Kira Kira Melody Gakuen Final Album (MACM-1142) | Song |