Single release from Dragon Ash featuring upper tune. Also features the song "BEAT SURF feat. PES (RIP SLYME) and VERBAL (m-flo)" and "CALLIN'" as B-side songs. Limited edition includes a bonus DVD featuring music videos of "AMBITIOUS" and "CALLIN'," and more bonus video footage (subject to change) *The DVD disc is encoded for region 2 (Japan, Europe, and Middle East), and no subtitles are included.