Ludwig Gensoukyoku

Ludwig Gensoukyoku summary:

Once again, Prince Lui is on the road, searching for the perfect pair of huge? that is, for a bride, together with his servant Wilhelm and the witch Dorotea. A shipwreck takes him to an unknown kingdom, where he meets a melancholy little mermaid? But of course, nothing is what it seems when Lui unravels the mysteries of another classic fairy tale princess!