Transmigrated Into a Book as a Good-for-Nothing, I Became the Demon Lord

Tong Qingqing transmigrated into a book, into a world overrun by demons and monsters, where she became a useless cannon-fodder character in a demon-hunting story... “Your mission is to win over the antagonist, Shen Yunfeng, and stop him from falling to corruption and becoming a demon!” “What? That's an impossible task!” Everyone knew Shen Yunfeng was a demon hunter, but no one knew he was the last descendant of the former Demon Lord. The blood of the demon clan flowed in his veins from birth, and he was cold and aloof, with no interest in women. Winning him over was easier said than done. Then one day, Shen Yunfeng suddenly disappeared. When they finally found him again, he was barely alive: blind, his core ripped out, his spiritual power gone, and every meridian severed... Tong Qingqing held him tightly in her arms, her gaze resolute and cold. “Whoever hurt you will pay a hundredfold! To hell with that stupid mission, and to hell with stopping you from becoming a demon...”