I really liked this a lot! It's fun, funny, imaginative and creative, and surprisingly touching. There's a nice little mystery in the middle of it, and the payoff was very cute. (And more than ever I want my own BOOH.)
I am definitely going to be getting the second one, which I believe comes out in a few months.
I loved how the author sets up several scenarios that lead to a lot of mystery and confusion as to why all these seemingly 'good' people ended up in hell. The whole conflict between the Seven Deadly Sins and true evil is an intriguing one, and I'm very curious as to how that will be addressed in the next book.
Just a lot of damn fun, and very recommended!