Fallen Desire by Alex Stargazer

The Devil is many things: beautiful, cruel, and sometimes mischievous. But above all he is cunning. Thrust into Hell against his will, Mark must learn to navigate this fantastical world – a world where demons rule over mortals, and curious little imps can be found spying in hidden nooks and crannies. Mark needs allies, but when betrayal lurks in every corner, who can you trust?