My Brother, the Doomed Villain, Spoils Me Rotten

She transmigrated into a novel—as the baby sister of the story's most stunning villain, destined for an early grave. But her brother has already turned dark, and his obsession? Spoiling her beyond reason. At two, while she's still gumming rice cereal, he schemes his way into the Grand Princess's mansion as son-in-law. His pampering knows no bounds: he buys her a county official position with cold hard cash, and that's just the beginning. Can she save her brother from his doomed fate, or will his twisted devotion drag them both into catastrophe?