O-Crazy Luv is Keiko Yamada's first full-length album, and her first album under the name KCO. The album contains a total of 11 tracks including her first solo single as KCO, "Haru no Yuki", and its B-side, "Mobile Emotion". The album comes in two editions, normal and limited edition. Both have alternate album covers which only differ slightly. The limited edition is packaged with a DVD containing the PV for "Haru no Yuki" and offshoot footage. Despite being a track on the album, the PV for "O-Crazy Luv" was not included in the DVD. It became available for download via iTunes. All songs featured in the album were produced by Tetsuya Komuro.
