three-volume manga, I have seen to have only found the first two on kobo, and number one through Chapters, a highly fictionalized account of Ludwig's love life. There are some historical accuracy to it like places, events and names. It is a good read, quick, and if you are a person who likes to read the more visual books like graphic novels and manga this may be one for you. Also if you are a person who likes to read historical fiction.
If you are a fan of manga you may like this because it does fall under that category. And you do not have to be a history buff or know that much or at all of Ludwig. Just be aware like I said before – it does exaggerate his love life. For it is a part of his life we do not much about and may not fully know unless we get first hand accounts/reports of it. I wish I copied the website, but there is one where you can read it all online.