UNRIVALED HEAVENLY DEMON TURNED MIDDLE SCHOOL TEACHER

Cheon Zhen was the greatest martial artist in a mythical world where immortals and people who can move mountains existed. Revered as the Heavenly Demon, Cheon Zhen was known to be the strongest of all the mighty warriors existed in that realm. Cheon Zhen was simply unrivaled until one day when the whole world went up against him and caused the world they lived in to be destroyed in their titanic duel. By a stroke of fate, Cheon Zhen found himself in 21st-century Earth as a child. While retaining all his powers as the Heavenly Demon, Cheon Zhen lived his life on Earth as a normal human under the name John Zane. He led a normal human life and eventually became a history teacher in some middle school in a big city. John thought he had finally acquired a peaceful and comfortable life for himself. Until one day, a giant red portal appeared in the sky and brought calamities to the Heavenly Demon's new home.