"Chu-Lip" is Ai Otsuka's 14th single under the avex trax label.

The title track of the single is used as the theme song for the TBS drama Kirakira Kenshuii, starring Manami Konishi and Eiji Wentz from WaT.

Otsuka can sometimes be seen carrying a stuffed animal frog on her TV performances for "CHU-LIP" because of this.

Otsuka also wore a frog ring at the 58th Kōhaku Uta Gassen.

[2] All tracks are written by Ai OtsukaOricon sales chart (Japan)