Note: These are comments collected from sasaengs and fans on various Korean fansites about Kaisoo. Not compiled by me, please see credit below :) As usual, take with a grain of salt.
-At the dorm, Kai would hide D.O.’s clothes and make him look for it.
-D.O. smacks Kai as a habit.
-Kai always asks D.O. to make food, regardless of the time.
-From D.O.’s point of view, Kai is someone who’s easy to pick on because he doesn’t get mad often even though he’s young.
-The way D.O. and Kai interact isn’t really childish, but shouldn’t be considered mature either.
-At the fansigning, a fan asked D.O. what he thought of Kai, and he said that Kai is a person very easy to get along with.
-When D.O. and Kai cleans up at the dorm, D.O. tidies up and Kai throws out the garbage.
-Suho likes to come to their room and chat with D.O, but gets thrown out by Kai every time.
-D.O. and Kai often eat fast food together (fries, hamburgers, bubble tea, etc.)
-Kai likes to tell jokes, but D.O. and the rest of the members don’t find them funny.
-Kai has a huge appetite, so D.O. always keeps some high-calorie snacks in his bag.
-D.O. often says that Kai is fair-skinned, that’s why to this day Kai refuses to admit that he’s dark.