Masahiro Nakai, a former lead member of disbanded popular Japanese pop idol group SMAP, said Friday he will leave, in late March, talent agency Johnny & Associates Inc., which he belonged to for over 30 years.The 47-year-old said at a press conference in Tokyo that he has had difficulty motivating himself to take on new challenges after SMAP broke up in 2016 and that he has established his own office to manage his work."I'm basically on my own," said Nakai, who has been hosting a number of TV shows since the break-up. "I thought I needed to put myself in a new environment."SMAP was so popul…READ FULL ARTICLE