This list include manga with an at least partly European medieval/pre industrial inspired setting where fantasy elements such as magic, superhuman abilities and/or mythological creatures are prominent. Generally exluding: series...
List of manga and light novels (mostly adaptions of one or the other) that are very similar in their character position, design, expression, etc.
There's plenty of manga about Demon Kings/Lords, and plenty more about their daughters. Usually involving a bodyguard who must watch over them or the daughter travelling to the human world. Let me know in the comments if any are...