A world that was ruled by no one at first and became a peaceful modern society. Under the shiny and clear sky with the cherry blossoms all around the school, a young man was waiting for his new chapter of life to start. He wanted a peaceful life after the figting that he had done over the years. Having the thought that of the new school life in front of him would lead him to a nice life, dangers await as his existence to other people are nothing but an obstacle. He has to fight his way through to protect his new companions that he made and keep his life that will be ruled by peace someday.