On the day of her retirement, history professor Jung Gwinam is hit by a bus as she pushes her daughter out of the way. When she wakes up, she finds herself in a different world, a different time, and even a different body! Now living as Delia, the protagonist of her daughter's novel, she'll have to climb the social ladder to escape life as a peasant. Despite some historical inaccuracies in this fantasy world, will Delia’s extensive knowledge be enough to help her make it back to the real world?
So, it's like if The Dark History of the Reincarnated Villainess, but it's the writer's judgy mom who gets stuck in the story? And she's a history professor? Also, judging from the opening, a real piece of shit as a parent, wow.
Also it is incredibly on brand for romance manhwa that the way they establish that the setting is ahistorical and that the protagonist is a jerk is through explaining about dukes.