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NO INTERNET (FILES) This file picture taken on December 30, 2015 shows members of the Japanese boy band SMAP (L to R) Masahiro Nakai, Tsuyoshi Kusanagi, Shingo Katori, Goro Inagaki and Takuya Kimura in Tokyo. Hugely popular Japanese boy band SMAP will break up at the end of the year, their management said on August 14, 2016, saddening their army of fans across Asia and marking the end of an era. - - Japan OUT / NO INTERNET / AFP / JIJI PRESS / JIJI PRESS / NO INTERNET Image Credit: AFP

The on-again, off-again break-up of an all-male Japanese pop group with a strong following in much of Asia is back on: The five members of SMAP will go their separate ways at the end of this year, after performing together for more than two decades.

The group’s agency, Johnny & Associates, announced on Sunday that SMAP would disband, according to Japanese media reports. The agency said its members would focus on their solo careers, Kyodo News service reported.

A possible split was widely rumoured in January, until the group’s members made an unusual television appearance to say they would stay together and apologised for causing concern among their fans.

Johnny & Associates said that it had recently proposed the band take a hiatus, but that some members wanted to break up for good, according to the media reports.

“We judged it difficult for them to continue activities as a group,” Johnny & Associates said, according to Kyodo.

SMAP, which stands for Sports Music Assemble People, was formed in 1988 as a six-person teenage boy band. Its first CD came out in 1991, and the group surged to stardom with choreographed singing and dancing.

SMAP’s members now range in age from 39 to 43, and it remains a popular group that is a staple of entertainment shows and commercials. Each member has also performed individually in variety shows and films.