kevin plus kiyo dyanmic, is two people who are married, acts like a couple, act like best friends and act like classmates all in one. but they are very good friends.
person 1: "omg, is u and ur bf dating?!"
person 2: "we arent dating..."
person 1: "but u guys act like a couple, u guys legit are "married" together"
person 1: "we are the kevin plus kiyo dynamic duh."