He's been commenting on Xiumin's shaved head post on IG.
(trans) zkdlin(kai): Handsome, aren’t you? Take care of yourself, don’t get hurt and don’t skip meals, make sure to apply skincare and eat your health supplements. Eat well, taking care of your health is the most important. Hyung, I love you. I’ll miss you.
zkdlin: Let’s leave a lot of supportive comments that show just how many people will wait for him and love him~ I love love you
zkdlin: I love you so so much ~