group EXO Kai is preparing for the Solo album.
sm Entertainment, a subsidiary company, said on March 3, "Kai is preparing a Solo album and the schedule is not yet decided."
Kai's Solo album release was the first since EXO debut in 2012, and it was the fifth runner in the team after Chen, Baekhyun, Suho and Ray.
About EXO
Exo is a South Korean-Chinese boy band based in Seoul that was formed by SM Entertainment in 2011 and debuted in 2012. The group consists of nine members: Xiumin, Suho, Lay, Baekhyun, Chen, Chanyeol, D.O., Kai and Sehun.
 Wikipedia