Is He an Immortal or a Demon King?

I wholeheartedly help my younger brother to rise to power, but my younger brother is greedy for my body. Lost his memory in a surprise attack and fell in love with a mortal He and his lover exterminated demons and defended the Tao, and was deceived into founding the Qingcheng Sect. I hiccuped after I created it. After hiccupping, I lost my memory again. We met again after losing my memory. Now he is chasing me. And I became flirtatious and he started the crematorium. The strange plot begins again! ! ! ! ! ! ! Intention: None