Tamamori Yuta will be joining the regular cast of Nakai Masahiro's TBS mystery drama, ATARU. Tamamori will be playing the younger brother of Nakai's character, who is studying psychiatry at a university. The drama will begin airingon April 15th.
Tokyograph article. (English)
Not surprised to see Tamamori in another drama, let alone a SMAP drama. But it looks like this season will be another Johnny's heavy season and I do not believe all the dramas are done announcing their full casts. So it should be interesting to see what other Johnny's will be in dramas this Spring season.