I Became the White Moonlight of a Mad Villainous Demon Emperor

[Blurb] Decades after transmigrating to a world of immortals and martial arts, Shuang Lengleng finally learned that she was the beloved heroine of an unspeakable dark and angsty romance. After reading the script, Shuang Lengleng's vision went black! Her refined and proper senior disciple brother secretly enjoys playing prison guard. Her frail, beautiful childhood friend is a deeply twisted yandere, and her gentle, attentive master is an obsessive control freak... As the person they all adore, she was gravely wounded while saving someone and fell into a deep sleep. One by one, they turned dark and sneaked into her room to take liberties with her... What kind of life is this?! Shuang Lengleng threw in the towel and went to seek protection from her never-before-seen grandmaster, who cultivated the Emotionless Dao and would never fall in love, and who most admired hardworking juniors. She swore she would stay by his side, cultivate with him, and never regret it for all eternity. Her grandmaster proved more than capable. Every man with bad intentions who came her way ended up on his knees. Shuang Lengleng could cultivate in peace and was deeply grateful to him. From then on, she had room in her heart for just two things: working hard to grow stronger, and being good to her grandmaster. The two grew increasingly close. Who could have guessed that one day, when demonic energy ran rampant in the forbidden grounds, he would walk toward her covered in blood and say, "Trying to run away? I suppose that's fair. Your grandmaster died long ago. I, the Demon Emperor..." He was the ancient Demon Emperor sealed in the forbidden grounds. Seeing his dragon tail emerge, Shuang Lengleng had little trouble guessing the truth, but still tried to bargain. "...Senior, considering how long we've been together, could you please not eat me..." The Demon Emperor gave a chilling smile. "I'm afraid not. I love eating tender young girls like you. Tonight, I'm going to eat..." Shuang Lengleng shut her eyes in despair, waiting to die. She only hoped it would be quick. But the pain never came. Instead, his dragon tail coiled around her and pulled her close. He bit her earlobe and whispered, "Lengleng said she'd cultivate with me, for all eternity, and never regret it. I've switched to cultivating the Dual Cultivation Dao now." Shuang Lengleng stared at him, bewildered. "D-Dual Cultivation?!" 1. Scheming, perverted Demon Emperor × energetic, hardworking little sunshine 2. The male lead is an ancient Demon Emperor, a Five-Clawed Golden Dragon, a deranged lunatic who wants to destroy the world at any moment. Theme: Even in a world of despair, a flower of hope can bloom