You Were Supposed to Reform the Villain, So How Did You Become the Mastermind?

I transmigrated as the third son of a doomed count's family, and thought I could lie flat and enjoy the life of a noble. Then you tell me this is a game I've played before? In ten years, the continent of Amperan will be destroyed by the “Five Great Sins”?! No way! For the sake of this wonderful life, I decide to sponsor the future villains ahead of time and reform them with love. And so, ten years later... The yandere Vampire Queen clutches my portrait. “Master said that light and darkness are separated by only a hair's breadth. He saved me, so all I want is to stay by Master's side forever and cuddle.” The vengeful king with eerie violet eyes kneels before me. “My entire life is yours, Master.” ...Wait, why does this feel a little off? What? I've become the greatest villain on the continent of Amperan!?