[Unhinged and outrageous + everyone is mentally unstable + comedy and lighthearted fun + play the pig to eat the tiger]
Jiang Wanwan is socially anxious. Because she looks sweet and well-behaved, she is chosen by the Family-Favorite System to transmigrate into a book, becoming the real daughter of the most disposable family in the story.
Her eldest brother is a doctor and friend of the original male lead, but he gets slashed and left in a coma because the plot needs the male and female leads to fall in love.
Her second brother is the devoted male supporting character. He hands over the family fortune and stocks to the female lead, then is hit by a car and left permanently disabled.
Her younger sister is a wicked, two-faced supporting villainess, whose only purpose is to help the male and female leads fall more deeply in love.
The Jiang family spent years working hard to build their fortune and grow their company. It all ends up belonging to the female lead, the pampered wife. She uses the company to put herself on equal footing with the male lead, and together they embark on a passionate, all-consuming love-hate romance...
The original story wrings every last drop out of the Jiang family, leaving some dead and others injured. Their family is destroyed, and not one of them gets a happy ending.
Jiang Wanwan arrived timidly, then used her incredible strength to save her entire family, one by one.
She thought the male and female leads were enemies of the Jiang family. Who could have guessed that after Jiang Wanwan showed up, the plot would go further and further off track?
She kept hearing System notifications in her ear saying that the male and female leads were growing fond of her.
[Ding! The male lead's family has developed affection for the Host...]
[Ding! The female lead's family has developed affection for the Host...]
[Ding! Wait, Host, it's not just the male and female leads. Every prominent family in City A treats you like a child! Your affection points are maxed out! You're going to become the one and only princess of City A!]
Jiang Wanwan just hunched her shoulders and said, "But I want to be a capybara who doesn't care about the world."