After I Transmigrated Into a Book, the Cold-Faced Prince Treated Me as His Life

(The heroine is a little timid at first because she has just transmigrated into a book and is facing an unfamiliar world. She'll stand up for herself later.) Zhou Kang'en, a 26-year-old overworked office drone, wakes up to discover she's transmigrated into the historical romance novel she bought on a whim before bed. She's now the utterly insignificant legitimate daughter of a marquis's household, destined to die before turning sixteen! From the start, she's a six-year-old bundle of cuteness. Her father doesn't care for her, her stepmother is watching her like a hawk, and her half-sister is vicious. Only her eldest sister, who treats her like a mother would, shields her under her wing. With her protector about to marry, the overlooked girl decides to finally stand tall! Luckily, her sister has left her some allies. And the cold-faced little boy she accidentally saves turns out to be the future Ninth Prince, who will hold power over the entire court? Watch as a modern office drone puts her workplace survival skills to use, joining forces with her sister, a fiercely protective big-sister fanatic, and the cold future villainous big shot who dotes on her alone. She takes on household and palace intrigues, kicks aside wicked rivals, exposes conspiracies years in the making, and rises all the way to become empress, ultimately winning the most devoted love, with only the two of them together for a lifetime! [Sistercon + Everyone's Darling + Two Strong Leads + Satisfying Revenge]