Kobayashi Yuu CDs (singles)
Yuu appears (sings/talks) in the following CD singles.
| 2005.04.06 | Happy Material (KICM-3096) | Song/Talk |
| 2005.08.03 | Happy Material (KICM-3111) | Song |
| 2005.11.09 | Itsudatte My Santa! Character Song 3 (YFCM-2703) | Song |
| 2005.12.10 | Seinaru Sorano Shitade (SCRF-00017) | Song |
| 2006.11.08 | 1000% Spaking (KICM-3135) | Song |
| 2007.03.21 | Wheel of Fortune (GNCA-7915) | Song |
| 2007.05.30 | Sora no Kotoba (GNCA-7917) | Song |
| 2007.08.17 | Love Sensation (KICM-3151) | Song |
| 2007.08.22 | Hito toshite jiku ga bureteiru (KICM-3152) | Song |
| 2007.09.26 | Zessei Bijin (KICM-3153) | Song |
| 2008.01.23 | Fight or Flight (GFCA-69) | Song |
| 2008.01.23 | Kuusou Rumba (KICM-3162) | Song |
| 2008.02.27 | Marionette (KICM-3163) | Song |
| 2008.11.05 | Nisemono [Friends] (KICM-3175) | Song |
| 2009.02.11 | Hanaji (ZMCZ-4481) | Song |
| 2009.02.11 | Kimi ni Mune kyun (ZMCZ-4482) | Song |
| 2009.07.23 | Ringo Mogire Beam (KICM-3192) | Song |
| 2009.08.26 | Kurayami Shinchuu Soushi Souai (KICM-3194) | Song |
| 2011.08.24 | Sakura Kaze ni Yakusoku wo (KICM-3237) | Song |