The beginning of the story comes from a beautiful teenage dream.
As a man who doesn't know martial arts, how can he deal with the fierce swords and bloody grudges when he sets foot on the rivers and lakes?
Many years later, when he recalled what happened in the past, he discovered that even though he had one more lifetime of memories, facing the complicated world, he still had no choice but to go with the flow.
When he met him, his fate had changed...