“Young priestess, stop the rebellion of the scoundrel prince! Filia is a priestess who has the ability to read a person’s innermost thoughts. She recieves a mission from Iro the High Priest to “”stop the rebellion of Leo Ellion””. He may have once been the promising prince of the Ellion Kingdom, but Leo became a scoundrel who dreams of rebellion, which was as if proving that the prophecy foretelling the end of the country to be true. In order to save the kingdom, he needed to be convinced not start a war, but… Can Filia, a young priestess who suddenly received a mission to save the world, really tame this beast-like prince?”

필리아제 – 가시왕관의 예언
https://teenmanhua.com/manga/philia-rose-the-prophecy-of-the-crown-of-thorns