Niina & K'suke left Guilty hearts!?

Bad news guys. Frm 30th of March, Kamenliar Niina & K'suke announced that they leave Guilty Hearts! ｡ﾟ（ﾟ＾Д＾ﾟ）ﾟ｡
WHY!! Guilty Hearts isn't complete again if they're not there huhuhu.
So, will they dance with root 5 songs again? '-' if yes, how about michan's & dasoku's part?
GAH! Can't accept this :(