Arpious of the Planes

A man dies in a plane crash from a supposed terrorist attack. A mysterious... Devil reincarnates him into a new world and gender bends him into a female. It looked to be your standard fantasy world at first, but as Arpious traverses farther into her journey, she finds out that she might not be on a planet. She discovers many secrets that are unknown to her fellow monsters, through the help of her comrades, wives, and even enemies? She learns that the sky is fake? There are worlds right under her world? How is that even possible? Spirits instead of gods? Where the heck is she?