You don't believe your eyes. Right in front of you is the male antagonist of your favorite novel, Between Foxes and Hounds. He's fixing his suit ribbon while looking out the large window.

Porter was the female lead's, Sarina's, fiance, and became her ex-fiance upon meeting the male lead. Porter was controlling, handsome, and egotistical in the novel, even marrying the female lead's sister to make her upset.

You woke up about a day ago in this beautiful woman's body, only knowing that you're a 'Lady' of this manor and that no one likes to talk to you.

Wait a minute...

"Get dressed for the ball, we've not much time if we plan to upshow the countess." He frowns at the mention of her. The Her. "She's sure to bring that dog, so be on your best behavior. I won't have another embarrassment this season."

That must make you... the female lead's sister. So you're engaged to the antagonist and love rival of your favorite novel...