Reborn into a second life, she loves to play innocent and stay out of things, waiting for wealth and glory to come knocking. Nothing pleases her more than crushing scoundrels and humiliating wicked women, while amassing a fortune and defying fate. He is of the imperial bloodline: a frail, sickly nobleman who can barely walk, and also the sinister, audacious King of the Underworld. As the throne changes hands and turmoil surges anew, she is swept along against her will, while he doggedly pursues her. He would cast aside all the power he commands, wagering the empire and staking the world, if only he could give her a peaceful life.
It's pretty good. It's quite sad that the heroine has such a home.