Darkness, Hat and Book Traveler

It's a very interesting work from a plot point of view. The main character is a librarian in a curious library where every book is a whole world. Walking through the worlds, the librarian inherited a lot, which is why many people fell in love with her, and some so much that they left their world in search of their love!
That's it! That's the tragedy/psychology/philosophism for which I'm looking at same-sex love. I like that they've moved away from the templates and turned the series into a fantasy adventure. The characters in love have a rich inner world and enough strength and courage to turn the universe upside down for the sake of their dreams. It may be difficult to perceive the anime right away, because the story is not told logically and sometimes backwards, but when the "mosaic adds up" a wonderful feeling of satisfaction rolls over. A very valuable and worthy shojo-ai.