everyones confused but remember this tag on the story and in ch 4 he's got a heart shaped mark on his stomach, its clear that they're not human like mimi having animal ears and the childhood friend having horns, im pretty sure the main character is an incubus and thats why even tho he says a bunch of stuff about staying friends but is also okay with all their sex acts , and it would explain why the demon guy was really drained after coming
THANK U SO MUCH FOR UPDATING AND PICKING UP THIS WEBTOON I LOVE IT AND MISSED IT SO MUCH AT LEAST I HAVE SOME CLOSURE