The Stray Puppy Marked Me

Yu Xi, the most sought-after Omega in the capital, has run into a serious problem lately. She accidentally slept with a top-tier Alpha. Everything else would have been fine, except that before that night, this Alpha had been a Beta on the verge of secondary gender differentiation. Chinese law clearly states that, barring special circumstances, newly differentiated Alphas and Omegas cannot be marked. When she woke up, Yu Xi never expected that something they had both willingly done would land her in legal trouble! In the end, the marking was classified as a "special circumstance." But to ensure the Alpha's full differentiation, Yu Xi was required to provide them with temporary markings for a year... She agreed. * The Alpha was named Ning Ke. Nineteen years old, obedient and sensible, they were a student Yu Xi sponsored. The year passed quickly and happily. As long as the requests weren't too unreasonable, Yu Xi would agree to them. Including, but not limited to, meeting regularly, going out to eat together when she had time, and, on very rare occasions, letting them stay the night at her place and allowing the Alpha, who still couldn't fully control themself, to follow their instincts and mark her completely... There was only one thing Yu Xi never agreed to: whenever Ning Ke asked to be her lover, she would only smile and say nothing. Yu Xi had a secret. From the very beginning, she had agreed to sponsor Ning Ke because their features and expression looked far too much like those of her ex. And that night, in her confusion, she mistook Ning Ke for someone else... * Yu Xi always thought she had kept this secret well hidden. Then, when she was on the brink of death, her fading consciousness heard that familiar voice growl beside her, "Don't die. Don't you dare." "You're mine. Don't go to him. Don't you dare die." She struggled to open her eyes. In the torrential rain, Ning Ke, usually so obedient in front of her, looked obsessive and deranged. As the young one performed CPR with trembling hands, they said in resentment and fury, "He's dead! What right does he have to compete with me?" Their voice shook with cold and broke into a sob as they repeated, "You're mine." Her ex had died in the line of duty two years ago, and Yu Xi's heart had died with him. So she had been seeing her ex in Ning Ke all along. The young one had known perfectly well, and had been using that fact to maneuver into place, step by step... [Heartless, law-abiding Omega x Sweet-on-the-outside, scheming-to-the-core Alpha] [Nine-year age gap, younger love interest, big sister, love me] Theme: Hardship and adversity make one strong