Demon Transformation. I recommend this fantasy romance novel to you. It tells the story of Song Xiaoyun, a Vientiane Roasted Snake with the bloodline of a Heavenly Demon. She has the former Demon King's treasure, the Dark Yin Bell, and is hunted down and schemed against by various demons. In the end, she becomes Demon Sage Purple Monarch. I hope you like this fairy's recommendation. Muah ~😗