[Ambrose]

Well, apart from the book of demonic arts and whatever procedure it is that they perform on the protagonist at the end to return him to reality, I understood and enjoyed. The detail you put into this story really helped me get an image in my mind of the setting, along with the blue demon. Everything seemed grammatically correct and it flowed nicely.

The biggest problem with this story is really that book you mention. You need to explain its origins and its capabilities better, and at least lend some idea as to why it does what it does. When I read that sentence, it felt like a slap in the face: "Uh, he was able to travel to hell by reading a book?"

Also, I like that he journeys to hell to retrieve his daughter but this could use a bit more foreshadowing. Have him call out to his daughter, instead of his wife. That way, the reader can begin to expect what his purpose is and not simply say "Oh, so that was it" at the end.