After I Transmigrated into a Book, I Became the Vicious Master of a Mad Antagonist

[A seemingly cool and aloof master who is actually simple and scatterbrained vs. a pure-hearted apprentice who becomes a deranged, black-hearted villain] [Younger man + hidden darkness + devoted puppy] Rong Chuqi transmigrated. The moment she opened her eyes, she discovered she had become Rong Yin, the vicious master of Yin Yao, the ultimate villain of a Mary Sue cultivation novel, and a vicious supporting female character herself. Rong Yin had not only abused the novel’s ultimate villain, Yin Yao, since childhood, but also seized his inner core and tossed him into a demon’s lair, leaving him on the brink of death. What she hadn’t expected was that Yin Yao was the long-lost son of the deceased Demon Lord. Not only was he rescued, but his demonic bloodline also awakened, turning him completely evil. Yin Yao plunged the entire continent into chaos. In the end, he stormed back to the sect, severed the tendons in her hands and feet, and threw her into the Infernal Hell. After the evil spirits devoured her body and soul, he turned her into a puppet. Fortunately, none of this had happened yet. Looking at the novel’s ultimate big bad, Yin Yao, standing before her with his frail frame and meager spiritual power, Rong Chuqi decided to nip his hatred for her in the bud!