Fifty years after the cataclysm, mankind has re-established a unified order and civilization on the ruins at an alarming rate, and everything seems to be thriving. However, darkness and evil are slowly growing in corners that most people cannot see. At the same time , Nightmares from other worlds are gradually eroding reality. The former traveler and legendary mage accidentally traveled back to the original world in an adventure accident, and embarked on the road of seeking power from scratch. Nightmare? That thing is that I become stronger nourishment!