The Villain's Beloved Little Demon [Book Transmigration]

Four-year-old little demon Lolo has just transmigrated to another world when she gets hit by the Villain-Saving System. The System tells her she now has four powerful older siblings, each of whom is a villain in a different novel. They are destined to do evil and meet tragic ends. Why are these humans so bad at being evil? Clearly, they need the great demon to save them! The disdainful little demon confidently accepts the mission, only to hear the System say: [Binding successful. From now on, please remember that your role is that of a little angel. Heal the villains with all the love you can muster.] Lolo: ??? * After they bring their little sister home from the orphanage, the once cold-hearted Yin siblings are so thoroughly warmed by her every day that their corruption levels begin to slowly drop. But just as that happens, the little demon hiding beneath an angel's guise can no longer hold back and lets a little of her true nature show... One by one, the three villains who are at odds with the protagonist group fall under the demon's spell. "Sign a master-servant contract with me, and gain the power to take down the protagonists!" The villains: ???! #What do you do when you've led the kid astray? # And so... The domineering eldest sister, who should have been battling the male lead of a reborn billionaire novel in high-stakes fields like finance and real estate, seems to have gotten seriously into the children's industry? The acclaimed director second brother, who should have been relentlessly pursuing the female lead of a transmigration entertainment-industry novel and routinely professing his love for her on Weibo, has instead started frequently reposting parenting tips? The genius third brother, who should have been competing with the male lead of an academic System novel in cutting-edge subjects like physics, chemistry, and biology, has suddenly devoted himself to children's education? Bystanders: ??? The protagonists, suddenly deprived of their rivals: ??? The villains: Busy raising a kid. Don't @ us. * After somehow completing mission after mission, the little demon, who felt she hadn't even gotten started, sighed and counted dejectedly on her chubby fingers. One, two, three... Huh? "What about the other villain?" The System said helplessly, "...You're only noticing now?" The next day, a delicate, doll-like little boy appeared next door. "Lolo, this is our new neighbor." The little demon gazed curiously at the handsome older boy and was just about to greet him when the System issued a warning. [This is the villain from an apocalyptic novel, the only SSS-rank threat who ends up dying alongside the protagonist. Host, remain on high alert!!] ...The little demon's eyes lit up at once. She grabbed the new big brother's hand and admired him. "Big Brother, Lolo likes you best!" Years later, because the girl he loved was frail and sickly, the handsome boy, who should have grown to loathe the world and destroy it, resolutely set out on the path of becoming a doctor who heals the sick and saves lives. Yin Luo: ... Theme: On children's education and children "giving back" to their parents