The future King and Queen of Mewni.
More info about the designs in ‘keep reading!’
Heyo, headcanon time! Killua is not an elegant sleeper. Peaceful, yes. Elegant, no. He looks like that one cat post where the cat has the worst sleeping face in Japan. Gon takes a picture as he's trying his best not to cackle. He fails at not cackling and Killua has to steal Gon's phone to delete that picture.