Time travel, one-on-one, pampering, novels
The heroine is strong and dedicated
Not a boy
Background: Silver Moon Continent, three countries, in another space of the earth, coexisting with the modern space on the earth, worshiping the moon god, religious belief: the moon god created human beings!
There are more men than women, and women with childbearing potential are respected! Not all women are fertile. There are a few who are born infertile and are called stone girls. They mostly serve as servants in the palace and have a low status. Half of the men are infertile and there is no way to tell them apart, so most women marry multiple husbands to ensure the prosperity of their children...