KAT-TUN (カトゥーン, Katūn) was a Japanese boy band under Starto Entertainment. Their formation under Johnny & Associates was in 2001. The group's name was originally an acronym based on the first letter of each member's family name: Kazuya Kamenashi, Jin Akanishi, Junnosuke Taguchi, Koki Tanaka, Tatsuya Ueda, and Yuichi Nakamaru. Their debut on...
