Headstart, an erotic fantasy novel

Jake, a normal guy receives powers and knowledge one year before the apocalypse arrives. He is determined to survive and get stronger. He thought that he had to fight Monsters to become stronger but his Patron had other ideas. Ishtar focuses on war and sex and as the war is yet to come the best way to prepare is to conquer the world in a different way.
Warning: Fetishes, Rough, Mindcontrol,