The Hero and The Harem are mine now is a Manga/Manhwa/Manhua in english language, Manhua series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Li Xiu, a genius schoolmaster, complained that the author of the comic book "I'm Alone Eliminating Demons" wrote off his favorite supporting role of the same name, and received a letter from the author: "Since I think I wrote it badly, come here! You are Li Xiu, Li Xiu is you ." Attempted to frame the protagonist? Was tortured to death? After death, the body was manipulated by the demons and chopped down by the protagonist? You who are crazy and handsome shouldn't end this way! This time, let Li Xiu rewrite Li Xiu's destiny!