Absolutetrash's manga / #trapped in a story(2)

MC gets trapped in a novel as the villain’s sister! She knows in the end all of his family gets excited, but she figures she is such a minor character, she’ll be safe if she marries herself off to a rich dude. She accidentally seduces the story’s ML instead....

MC dies and reincarnates in a novel as the hero’s wife! Sadly she’s a minor villain who will be executed by him. MC decides to change her fate by aiming to get amicably divorced with him, instead of betraying him.