Sister-in-Law, You Can Have Your Crush Back. I Want Your Brother

【One-on-one romance, she pursues him at first, sweet romance, transmigrate into a book, no golden finger, no pocket dimension, almost no angst, women who support one another】 Jiang Yiyi, a big shot in the AI technology world, dies suddenly and transmigrates into a book. Since she's here, she decides to make the best of it and starts figuring out how to marry Song Yunxian, the tutor she likes from the book. The first person Jiang Yiyi thinks of is her future sister-in-law, Song Yunyue. They hit it off at once: Jiang Yiyi: “I know you and His Highness the Crown Prince are in love. I'll give him back to you, but I have one condition.” Song Yunyue: “What condition?” Jiang Yiyi: “I want your brother. I want to be your sister-in-law.” Song Yunyue: “If what you say is true, I'll drug my brother or tie him up and deliver him to you.” And so Jiang Yiyi and Song Yunxian, and Song Yunyue and Shangguan Li, begin their blissful married lives as two couples.