I recently finished watching an anime called The Royal Tutor also known as Ōshitsu Kyōshi Heine 王室教師ハイネ and it turned out to be a really good show. I enjoyed the comedy and drama in the show. The characters are funny and all of them have unique personalities. Heine is my favorite character in the show because of his child-like appearance and his grown man voice. Heine was what had me hooked onto the show. Heine reminds me a lot of Sebastian from Black Butler with his mature attitude and his sense of humor.