I Accidentally Became the Nation's Big Sister [Book Transmigration]

Story blurb: After transmigrating into a book, Ruan Zhao became the villainous female supporting character, while the heroine was now her own younger sister. Sisters turning against each other like in the story? Not happening. Her little sister was so adorable. Of course she'd spoil her! Later, she started livestreaming with the idea of studying while earning some pocket money. Who knew she would unexpectedly become popular? After appearing on a knowledge quiz show, she became famous for good. Whenever exams came around, netizens flocked to her to make wishes, and a huge crowd of devoted fans chased after her, calling her "Big Sis." Ruan Zhao: "..." Sorry, I only have one little sister. The heroine: I must have been reborn wrong! * The younger sister is reborn, and the sisters don't turn against each other. * The questions in this story are from Baidu. Top students, please go easy on me. ◆◆Pre-release: My Sister Is the Real Daughter and Heroine of a Wish-Fulfillment Novel◆◆ The real daughter the Lu family had accidentally switched at birth was finally brought home. The Lu household became lively, but that had nothing to do with Lu Jinyou. To her, it was just one more relative in the family. Then that night, she dreamed that the world she lived in was actually a wish-fulfillment novel with a powerful female lead. The heroine was her biological older sister, the Lu family were the awful relatives who got face-slapped, and she was the doomed younger sister who died young. She had only one short year left before her death. The good news: After being bound to a System, she gained a golden finger. And completing missions would earn her chances to win prizes in the System's lottery. Lu Jinyou had no interest in meddling in the plot or clinging to the heroine. She just wanted to live a good life and had no plans to grow closer to her. But before long... When the heroine learned she was going out with friends, she transferred a million yuan to her. When she found out Lu Jinyou was playing a game, a dozen professional players applied to add her as a friend. When she discovered Lu Jinyou loved food from a certain private restaurant, she gave her a card for free meals for life. Later, when the heroine introduced her to a friend, her eyes gleamed with a smile as she said, "My little sister. Cute, isn't she?" Only then did Lu Jinyou belatedly realize that she had become the heroine's precious little sister. Theme: Study hard