After Mistaking the Villain for the Hero

"This is a cultivation/world where demons are rampant. The male protagonist is the chosen one who saves the common people. And you are his destined female protagonist. You must rescue him who was injured in the battle between immortals and demons, help him restore his cultivation, fall in love with him, help him eliminate demons and defend his way, and become a world-famous hero." In the third year after Qingwu traveled back in time, he finally found the injured and unconscious male protagonist in the lake. Taking care of him, helping him recover, and falling in love with him, everything went smoothly. Until one day, a group of people from the demonic path knelt on the ground and shouted: "Welcome the Demon Lord and his wife." Qingwu: "???" It turns out that what she saved was not the male protagonist, but the villain who was supposed to die in the battle between immortals and demons and only existed in legends from then on. So where is my destined male protagonist? "You thought he was a dead big devil and buried him directly by the lake. Now the grass on the grave is three feet high." Reading guide: ① Low magic fairy/non-upgrade flow, non-shuangwen serious drama/sugar mixed with glass slag ②The main plot and a lot of emotional drama Purpose: To subdue demons and eliminate demons