Who in the World Deserves to Be a Prodigal?

I Want to See the Heroine Have an Average Appearance and an Average Family Background, and Be a Heartthrob or a Mary Sue.

It's all fine, don't change the system to a beautiful one. Looking for a book, it seems to be a quick travel novel. The heroine's first world seems to be the background wife of the hero, acting as a background.