Triggerwarning Suicide and Depression (for both my review and the book)

The idea was a great one and Matt Haig did a really good job at describing the library and the different world but I think all the Characters (besides the brother) lack a bit of depth.

But maybe thats just the point with so many universes living together, you cannot get to know people as a whole, but only a one-dimensional picture of themselves.
Also I think it is pretty problematic, that depression is not really shown as an illness but more as a lack of motivation or perspective. I don't know but i couldn't stop thinking about it. </spoiler