The Villain's Split Personalities Keep Crushing Me

My system gave me one job: take down the villain. Instead, I ended up in his bed every morning wondering which personality will try to kill me today. As a quick-transmigration agent, I've faced countless dangers, but nothing prepared me for a villain with multiple personalities—each more dangerous and captivating than the last. Between surviving his murderous alter and falling for his gentle side, I'm starting to think going down with him might not be the worst fate.