KAT-TUN (hepburn: katūn, sounding similar to "cartoon") is a J-pop group from Johnny & Associates, Inc. (JE), made up of six members:

  • Kamenashi Kazuya, 亀梨和也, (born February 23, 1986)
  • Akanishi Jin, 赤西仁, (born July 4, 1984)
  • Taguchi Junnosuke, 田口淳之介, (born November 29, 1985)
  • Tanaka Koki, 田中聖, (born November 5, 1985)
  • Ueda Tatsuya, 上田竜也, (born October 4, 1983)
  • Nakamaru Yuichi, 中丸雄一, (born September 4, 1983)

The group's name is an acronym formed by the members' surname initials.

Like other groups under JE, KAT-TUN is considered a Japanese idol group. Therefore, the members not only sing and dance, but act and star in dramas, movies and commercials as well. They are arguably one of the most popular boy bands in Japan at the moment. All seven singles, three studio albums and six DVDs released since their debut in 2006 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.

Source: http://artists.letssingit.com/artist-w96ct/biography/280342