The descendant of a long line of demon fighters, young Yonosuke inherits the responsibility of defending the harmony between Heaven and Earth. With his magical sword Chitentai and ally Tsukinojo Inbe, Yonosuke battles and banishes demons. However, Yonosuke can only detect the evil creatures' presence with Tsukinojo Inbe's help, which occasionally puts the young demon fighter in even greater danger.