This host is quite capable; when asked to be the villain, she truly embraces her demonic power.

Intro: After her death from a heart condition, the soft bun Shen Yue was bound to a villain system. The system informed Shen Yue: As a villain, one should possess villainous qualities: Talkative, prone to courting death, and causing trouble for the male and female leads. However, the primary mission was to make the main villains shine. Every main villain had a tragic past, and Shen Yue was the spark that ignited their descent into darkness. ... The arrogant and condescending crown prince tasted the sweetness of love, only to be abandoned and betrayed at his lowest point. The stammering, honest, and burly man thought he had found love, but was humiliated and discarded at the height of his happiness. The cold-blooded and ruthless emperor believed he had found true love, only to be betrayed and spat upon at his most glorious moment. The dark and paranoid Demon Lord thought he had found salvation, but instead plunged into an even deeper abyss. ... The system rubbed its hands gleefully: "I knew you weren't an ordinary soft bun; you've brought out the potential of the main villains." Later, after pushing things too far, the villains turned into villains, eliminated the male and female leads, and the small world collapsed. The soft bun, having completed her mission, still blamed herself: "The main villains are so pitiful; I'm truly so wicked." The system looked at the now insane male lead and the collapsed world, and for a moment, it didn't know who was more pitiful. ...