Can I create a new metadata?
I used to use Moon+ Reader, but after an update it erased the tags of my 150 books, so I decided to change.
I installed Mantano Reader Premium.
Well, like any e-book reader, Mantano lets me sort the books by tag, author, ... and, for my surprise, I can also sort them by series. And that's my doubt!
Suppose I have the books The Fellowship of the Ring, The Two Towers and The Return of the King. What (and how ) can I do so that Mantano Reader understands that these 3 books belong to the Lord of the Ring serie?