Composed originally of members of various teen dance units within the Johnny and Associates music company, the group Kat-Tun (the name is an acronym of the members' names) gained popularity after performances in 2001 as backup dancers for Idol singer Koichi Domoto. With a surge of teen (and pre-teen) demand, the group was solidified and sent into rotation for concert performances despite not yet having any recordings to their credit. A live DVD of some of the concerts sprang to the top of the Oricon charts upon its 2005 release, prompting the band, five years after formation, ...