I Transmigrated into the Cold Male Lead's High-Maintenance Ex-Girlfriend

Campus + System + sweet romance + both leads are each other's first and only love. A sweet, radiant beauty × the aloof prince who becomes a yandere When Yu Xi woke up, she'd transmigrated into a campus novel as the vicious supporting female character who wouldn't stop pursuing the male lead. In the original story, the supporting character chased after the male lead relentlessly, only to hit a wall again and again. Then the heroine appeared, and the male lead met his soulmate. The ice around his heart melted. The supporting character turned bitter with jealousy, slept with the male lead, and successfully got pregnant. But he retaliated mercilessly, and she died horribly in the street. After transmigrating, the System ordered Yu Xi to maintain the vicious supporting character's persona and seduce the male lead. Yu Xi: “...” She didn't know how. And so Yu Xi clumsily pursued the male lead. Just like that, he started dating her, holding her hand, hugging her, and even kissing her. He was even planning to marry her after graduation. System: “Something's wrong. We need to get out of here.” When the heroine appeared, Yu Xi immediately packed her bags and left. As the top student in the dance program, she went abroad on an inter-university exchange and successfully broke up with him. Who knew the usually aloof and self-controlled male lead would refuse to accept it and chase her overseas? “Baby, why are you running?” * Later on, every time Yu Xi brought up breaking up, her lips got a little more swollen, and he refused to let her go. It was all because Xie Shijin had discovered her breakup plan. Break up? Only if he was dead. * P.S. The original heroine isn't catty or competitive with other women; she's career-minded. The whole story is sweet and romantic, and the male lead only ever loves Yu Xi. One-on-one romance, with both leads each other's first and only love. # All the waters in the world will meet again; the Arctic Ocean and the Nile will merge in the moist clouds., Hermann Hesse, The Last Summer of Klingsor