After Marrying the Male Lead’s Frail Older Brother, I Won at Life

[Transmigrate into a book + devoted couple + married first, fall in love later + healing + spouses pretending together] [Fake-devoted drama queen sunflower & fake-sick, scheming old fox] Private detective Song Yijiu transmigrates into a book. She becomes the troublemaking female supporting character in a novel about a wealthy heir and a female celebrity. From the start, it's her wedding day, and the hero has run off to pursue his true love on a dating reality show. Everyone is waiting to laugh at her, but Song Yijiu decisively announces that she'll marry someone else: “The groom I truly want is Si Suyu, the eldest son of the Si family!” Everyone is stunned. * Si Suyu is the hero's dazzlingly gifted older brother, little more than a background character in the book. Unfortunately, fate is cruel. He was born with a strange illness and has little time left to live. Handsome, rich, low-maintenance, and not long for this world. In short, the perfect husband! Song Yijiu decisively snags him, pretending to be deeply devoted and unable to live without him. Someone calls her husband a sickly weakling? She's a born contrarian, and she'll roast his ancestors for eighteen generations. Someone laughs at her husband for being short-lived? She's a professional detective, and she'll expose the darkest secrets of his entire family. A suitor makes snide remarks, saying her husband is someone she settled for? She dedicates a suona performance at the wedding, offering a full funeral procession service. No thanks needed. And the hero, who wants to get back together? Get lost. I'm your sister-in-law! * With elaborate declarations of love and fierce defense of her husband, everyone believes Song Yijiu is head over heels for Si Suyu. Only Si Suyu knows it's all an act. Song Yijiu is just waiting for her husband to kick the bucket so she can inherit billions and enjoy a beautiful life. But the short-lived man in the book just keeps living longer and longer. Song Yijiu tries to escape, but he pins her on his lap and kisses her until she can barely breathe. “Too late.” Fox-like Si loosens his tie, his voice languid. “You can only be mine.”