The Devil's Advisor av Brad Abdul

Lucy, the Devil, wants to retire. Brian, the Business Advisor, hates his job. When Brian’s jealous co-workers put him in Lucy’s crosshairs, she makes him an offer he can’t refuse: work for her and increase the productivity in Hell by 50% or suffer the cruel fate planned by his peers. To sweeten the deal, Lucy offers Brian the chance to be her successor if he pulls it off. Brian reluctantly agrees and dives in with both feet to the bureaucratic nightmare of Hell. To make it out alive, Brian faces Death, God, and Lucy’s own twin children.