Kuwatani Natsuko CDs (singles)
Natsuko appears (sings/talks) in the following CD singles.
| 2001.01.24 | Melody (LACM-4004) | Song |
| 2001.07.04 | Egao ga No.1! Yapparine (KICM-3011) | Song |
| 2003.12.21 | Sister Princess Xmas Song Collection (KICM-3048) | Song/Talk |
| 2005.08.03 | Happy Material (KICM-3111) | Song |
| 2006.12.06 | Character Song vol. 5 Ryoko Asakura (LACM-4324) | Song |
| 2011.08.24 | Sakura Kaze ni Yakusoku wo (KICM-3237) | Song |
| 2015.04.29 | Fure Fure Mirai (LACM-14342) | Song |
| 2015.05.27 | Nagato Yuki-chan no Shoushitsu Character Song Case 2 (LACM-14352) | Song |