Perverted Step-Dad System

He abandoned his future for a single impossible promise. At twenty-two, Lucien Evernight gives up his ordinary life, seduces a wealthy widow, and marries her, becoming the stepfather of three breathtaking daughters. Why? Because a mysterious system chose him. A system that rewards only one thing... The corruption of his own family. Armed with supernatural abilities capable of twisting desire, eroding morality, and turning the impossible into temptation, Lucien stands at the edge of a path from which there is no return. Every choice brings greater power. Every broken taboo unlocks new rewards. And every daughter is a different challenge. — Description from novelcodex.org