Quickly wear a child, the villain is more favored, who wants the male protagonist?

An elderly infertile overlord, a tyrant with no heirs, a savage scoundrel, a sinister villain with a genetic disease, the apocalyptic zombie king... Their greatest wish is a child. They offer 100 million for each birth. Xia Xizhi, who travels back in time, cheats on the male protagonist and decisively bears a child for the villain. Who needs the male protagonist when the villain is more pampered? But one male protagonist after another ends up kneeling and expressing regret. A doting overlord, a spoiled heiress in a sweet romance novel, sponsors the impoverished female protagonist through her studies. But the female protagonist, unbeknownst to her, becomes her husband's mistress, bears an illegitimate child, and seizes her inheritance, turning their lives upside down. The cannon fodder mistress marries a second time to the heirless emperor, a stepping stone in a novel of domestic intrigue...