I Transmigrated into a Period Novel as the Male Lead’s Sister-in-Law and Quietly Became a Billionaire

[Strong female lead + period setting + space + unlucky husband + transmigrate into a book]

Zhou Jin is reborn and discovers she's transmigrated into a book as a cannon-fodder character who gets angered to death by the vicious supporting female character.

The vicious supporting female character drugs the male lead to keep her place in the Fu family, but the original character's unlucky husband drinks the drugged concoction instead, and the original character is so furious that she dies.

Remembering the original plot, Zhou Jin clenches her fists. "Whoever wants to follow this stupid plot can do it. I'm not doing it."

She doesn't want to follow the story, but that unlucky man keeps dragging her right into the same ridiculous plot. (eye roll)

Whether she's reborn or turns ruthless, Zhou Jin speculates on the side while studying hard. After the national college entrance exams are restored, she gets into university and rides the wave to buy up plenty of land, becoming a landlady.

A heroine with superhuman strength ends up with an unlucky hero who's always getting hurt, and their "miserable" life begins.

The setting is fictional.

Theme: Relationships are built over time. Whether between family, friends, or lovers, both sides need to nurture them.