ARP: A 4-member dance and vocal group created by the latest AR technology. This popular group got their start with Avex, and are unique for their interactive concerts which combine highly-skilled song and dance routines with a format that changes based on how much the fans are cheering them on. (Source: Crunchyroll)ARP (nominally an abbreviation for Artists Republic Production) is a dance vocal group which holds live performances — featuring singing, dancing, and interactive talking with the audience — in real-time using the latest augmented-reality technology. The ikemen (handsome) group members include their de facto leader Shinji, the talented dancer León, and the members of the Rebel Cross duo (designer Daiya and composer/writer Rage).