My Bride is the Villainess

Dale, the only heir of a backwater baron household, has a secret. It was his--and only his, secret he was someone who was originally not of this world, and that he had merely reincarnated in it. And most of all, he knew about his world. This world was the same world--or perhaps similar--to the world of his favorite game. And so, Dale only wanted to live his new life in peace and live a happy life after he marries a beautiful woman he fancies. However, that simple desire was shattered the moment a knock resounded in his doorsteps...