The voice acting was great, and I really liked the concept for the whole end of the world thing. However, there were several glaring plot holes that were hard to me to suspend my disbelief for. I am confident that if the main charaters found themselves in an apocalyptic scenario, like or unlike the one they are in, they would not survive.
Also one chapter is out of place. That is probably a problem on aubilbe’s end though, and will likely be fixed.