On one hand, the art style and the colors of this book do a magical job of mirroring the fractured nature of the characters and their experiences, including with mental illness and separation. I also loved the characters and the concept. On the other hand...the pacing felt a bit all over the place, with some early sections feeling incredibly slow-paced, and much of the second half feeling rushed. I wish it had been longer, with more development of the journey at the center of the book, or else with more focus on that journey rather than on the build-up.
It also has to be mentioned that the coloring of the print was a serious issue for me. Graphic novels can strain my eyes at the best of times, but there were a lot of choices here that made it worse than usual--yellowish-orange print on top of yellow background, black print on ink that's so dark it would stand in for black in another book (super-dark violet/blue), and dark grayish-lavender print on top of that same super-dark shading. This isn't to mention the sections of dialogue that were glossed over in a way that made them look somewhat faded (clearly a design choice and not a printing issue). All told, there were just far too many pages where I was struggling to read, even in good light, to the extent that I was taken completely out of the story. If I could figure out who made that choice, exactly, I'd probably avoid future works by them, though I don't think there's any way of telling in this case.
All told, I'm not sure where to end up with it or whether to recommend it, much as I loved aspects of it. I think I'd certainly look into the writer's future works, but I'd probably glance through a print copy in the store before bringing it home. I think I'll do the same with future GNs from the publisher also, in case that's where the design issue stemmed from.