This diary of the author of the Tale of Genji is mostly notes. The actual diary is only a few pages, and should only take a couple hours at most to read. The rest of the book is filled with maps like the ones shown and plenty of other good stuff. You can definitely see in this book how Genji was modeled after Murasaki’s life, though it’s been a while since I read either this or Genji to be honest. I guess if you like the Tale of Genji then you’ve already read this, if you haven’t I would definitely recommend slogging through Genji before going after the diary.