Once long ago, our hero was a worthless kid, without spirit and weak spirit power. He worked as a porter in a famous academy.
But the one who returned back in time knew this wasn't the end of the world. He had ways unknown to many. So he would train and get stronger, turning himself into the strongest spirit master in the world.
In this world and time, he had many years to train and scheme for his revenge. He would never allow the past failure to be repeated once again.
Join our hero's journey towards the peak of his strength!