"Kagero Project" is the natural enemy of p (JIN) is an original multi-media planning. Natural enemy P (JIN) is to use the original song VOCALOID contribution P (producer), as 1st Place the planned IA Project of a, currently only Hatsune IA and producing songs. The main style of music is synth rock, also produced similar lyrical works, often marked with "amazing toxic" label. Each song tells a story, and each story belongs to a world view, are linked with each other. JIN published in 2011 plus 2012 song music by describing the story as a theme, personally penned down a novel, and then also began to JIN for the original, Hiro Sato ma draw comics "kagero DAYS."