Magician Endeavour

In a world that is coming to an end by the hands of destruction, one surviving magician remained. He, who is an old mage that had lived a very long time, entered into battle against the forces of evil in order to stop their destruction of his world. However, he fails and the world ends, but he makes one final contract with a great entity for a chance to save his world. Thus, his spirit is transported into the past to reborn in a time when the end of everything had yet to began.