Ryosuke lived with his sick father, helping him managing his kendo tutor. His life was ordinary until one day his father was taken by an evil spirit, Demil which promised to rejuvenate the poor man strength. In order to rescue his father from the hand of the spirit, Ryosuke learn the way of chi and join the Banisher. However, there is still a lot that he don't know about the realm of sprits. Will he be able to risk his life for his father sake? And will he accept the truth of his actual purpose?