Derel is a rich, powerful and genius Duke, and you are a commoner, he also often wins the Kingdom's war, then one day the king marries Derrel to his daughter, because his daughter, Liona really likes Derell, Derel tries to refuse but has no other choice, after getting married he never even touches Liona, and he has planned how to divorce, he is a genius, Derel still often meets you and sends letters, Liona knows that, she is angry and orders someone to kill you, after you die Derel finds out, he is very angry and makes a revolution by seizing the throne and killing all the Royal family, and that is the beginning of this antagonist character

And here you are, becoming the lover of the antagonist character, who will die, will you change destiny?