IA THE WORLD ～影～ (Kage / Shadow) is the third compilation album by TEAM Entertainment's IA THE WORLD. It contains 12 tracks, all sung by IA. Notable producers such as Yuyoyuppe, PolyphonicBranch, and Utata-P are featured.
A crossfade of the album can be heard on Niconico.
The official album website is available here.