The Unclouded Soul.

For centuries, humans and demons have battled over the legendary Yuli Spring, a symbol of desire. Free-spirited Xiao Yao unexpectedly enters Ten Thousand Demons Valley, disrupting the demon world. There, she meets the powerful Demon King Hong Ye, who grows to admire her pure heart. Together, they face mysterious cases and formidable enemies, uncovering hidden truths along the way.