Evil Young Master Doesn't Want a Bad Ending

The day the little aristocratic tyrant, Roel Ascarte, met his younger foster sister was the day he regained his memories of his past life—and realized that this was the world of a popular gal game that he had played before. What’s more, he was the main route's antagonist! Just how can he avoid his demise? Now that Roel has awakened to the system, he sets off on the path of self-preservation!