After Dumping the Scumbag, I Became the Villain's Beloved

[Quick Transmigration + Mutual Devotion + Sweet Romance + One-on-One] Jiang Yuezhao binds herself to a worldline-repair System and must save worldlines on the brink of collapse after the original heroine's consciousness escapes. She has to win the male lead's affection until it reaches 100%, but after receiving the plot, she goes straight into the arms of the yandere villain. System: Warning! The villain is extremely difficult to win over. Host, please think carefully. Jiang Yuezhao smiles knowingly. “What's a possessive, obsessive yandere? Once he's properly trained... isn't he just a loyal dog?”