Love the characters and the story of the book. Each chapter is an exciting journey. You should definitely read it. Though the updating isn't stable, every chapter just energizes me to be patient for the next one.
If you're looking for a thriller book to pass time, this is the book for you. The story is well written and will get you sucked in the world of the purgatory. Trust my review and the others reviews and read it. You won't regret it.
Really good, the characters and story is nice and the plot is unique compared to others. The biggest downside is the translation quality, after chapter 40 the translation is unreadable.