The first episodes are so funny and trash, also I didn't expect so many ambiguous things XD Many things just don't make sense and it feels more like a japanese comedy drama.
The ending was much more [minor spoiler] positive than I've expected. The movies and series about AI I've seen so far were a bit darker. Also I've expected something more shocking, but maybe the fact itself that it wasn't , made it unexpected in it's own way (?).