Fifty-first single from SMAP features the main theme song of TV series "Dokushin Kizoku" starring Tsuyoshi Kusanagi and "Hello," which is an official song of Hello Kitty's 40th anniversary sung by them. Comes with a bonus DVD featuring a music video of the title song. Cover artwork is different from other editions. *The DVD disc is encoded for region 2 (Japan, Europe, and Middle East), and no subtitles are included.