KAT-TUN is a Japanese boy band formed under Johnny & Associates (JE) in 2001 who releases records under their own label, J-One Records. The group's name is an acronym formed by the members' surname initials. Currently one of the most popular boy bands in Japan, all 10 singles, 3 studio albums and 7 DVDs released by the group since their debut in 2006 have debuted at number one on the Oricon music and DVD charts.
Their debut was marked by a tripartite release, consisting of a single, an album and a DVD: Real Face, Best of KAT-TUN and Real Face Film. All three shattered records in sales.
--Wikipedia
Members
Kamenashi Kazuya (亀梨和也)
Akanishi Jin (赤西仁)
Taguchi Junnosuke (田口淳之介)
Tanaka Koki (田中聖)
Ueda Tatsuya (上田竜也)
Nakamaru Yuichi (中丸雄一)