TV personality Masahiro Nakai announced on Thursday that he would retire from the entertainment industry amid allegations of sexual misconduct.

In a statement released on his website, the 52-year-old former member of the now-defunct boy band SMAP said terminations and cancellations of contracts involving his TV and radio programs have all been completed, and negotiations with his sponsors are in progress.

¡°I do not believe that I have fulfilled all of my responsibilities with this,¡± he said in the statement. ¡°I will continue to deal with the various issues with utmost sincerity. I personally take all of the responsibility. I am incredibly sorry for having caused all the trouble and damage for many.¡±