Raffine's Plan: Save My Favorite Character

*I'll marry the male lead myself!* Raffine is in a predicament, and there are three reasons why. One, she's been reincarnated into a super angsty, highly depressing novel. Two, her older brother is destined for death in said novel. And three, the only way to save him is by marrying the male lead. What the hell is going on?! --- I possessed Raphine, the youngest sister of the second male lead, who had no dreams nor hopes, in an impoverished and obsession filled novel. That was also because he had a crush on the female lead, who married the male lead on a contract, and eventually died. I can't believe it's such a miserable ending for my favorite character and kind eldest brother. No way! Raphine decided to brainwash Prince Jerkan, the male lead of the novel, to prevent the female lead's ...