The female protagonist Xie Wuhuang personally sealed the male protagonist Fu Qingming in Wuyahai in order to save the world. Just because he "became a demon", he also lost his cultivation and fell into the mortal world. Thousands of years later, with amnesia, she unintentionally unlocked the seal, only to discover that Fu Qingming had never been possessed and that everything was a trap set by Heaven to eradicate the threat.
Intention: I only hate you for not believing in me