What Do I Do After Becoming the Female Lead's Pet? [Quick Transmigration]

System 2333 had always liked Hosts who were obedient and did their tasks, so when it first met Xu Nuo, it was absolutely thrilled. But could someone explain why its Host, who was the cat of a Mary Sue heroine, had a whole crowd of male leads and supporting male characters fighting to adopt her? And why did they turn evil when they couldn’t get her? Xu Nuo innocently licked her paw: Meow meow meow?