Kazuya Kamenashi Jin Akanishi Junnosuke Taguchi Koki Tanaka Tatsuya Ueda Yuichi Nakamaru KAT-TUN ( カトゥーン , Katūn ? , sounding similar to "cartoon") is a Japanese boy band formed by Johnny & Associates (JE) in 2001, released on their own label, J-One Records . The group's name is an acronym formed