After Disguising as a Man, I Conquer the Mad Traitor?!

The current Emperor died unexpectedly, and the Empress Dowager brought me from the commoner's background to replace my deceased brother as the Emperor's successor—and that’s fine, but she also wants me to marry the princess as him?! But… I’m a woman too! On the night of our wedding, I escaped after countless hardships, only to fall into the hands of the notorious traitor… Although he constantly wants to kill me, I have no choice but to force my way into his life to keep my secret.