(Ensemble cast + strong heroine + transmigrate into a book + saving the world + villainess)
The Zhu imperial family welcomed a pair of fraternal twins when the empress gave birth to a prince and princess, auspicious signs appearing with their arrival. But the good fortune did not last. The regent rebelled, and the empress risked her life to protect the crown prince and princess. The two children went missing outside the capital.
Before she transmigrated, she had been a young lady from a prominent Kyoto family. She never expected that after criticizing a mindless novel, she would sprain her ankle on the way downstairs and transmigrate into a book based on a leisurely world. The original heroine was gentle and kind, while the original owner of her body was merely a foil. Though the royal family eventually found her and she gained a noble status, she bullied the weak for fun. She couldn't stand how the heroine was always helping the vulnerable, so she constantly targeted her, only to incur the wrath of the heroine's many admirers. She transmigrated into the book right as the heroine and her brother were being forced apart. She blinked her big, innocent eyes. Damn it, she's now a little girl not even six years old. What can she possibly do? After finally making it to the place where the various immortal sects recruited talented children, she somehow ended up in a sect full of villains! Damn you, heavens. She'll never call you Dad again!
Zhu Yunyao: There are plenty of prodigies in this world, but they all call me one!
Zhu Yunyao: You've already seen my whip technique. Don't blink. Here comes my second form: my swordsmanship. You'd better see that too!
[Early focus on growth; the heroine has another identity; not a self-sacrificing saint; villainous sect; does not vilify the original heroine; ensemble cast. If any of that bothers you, please move along.]