Cat on left is Princess Fire. Cat on right is Princess Ice. The two princesses are bound to their kingdoms, and should be mortal enemies (according to their fathers), but they are supposed to marry princes from other kingdoms, even though they are -secretly- deeply in love. They meet eachother each night where the boundary lies. Each time they meet, they take of they crowns (the flowery, fire/ice themed things on their heads) to symbolise that they can be and love who they want to. Fire x Ice
@Skorch for lineart.