Ryoma was originally the prince of the Echizen clan, the ruler of the magical world. He was expelled from the Magic City because he was born without magic. In order to protect his son, Echizen Nanjiro sent him to Nanako's place. When Ryoma was 12 years old, he met Karubin, who called himself "God", and surprisingly learned magic. With the help of Fuji Shusuke, he became a real magician. But the path he has to take is not that simple...