In a world that's ruled by the Sun and Moon, every 100 years a child of the eclipse is born. The child will unite the child of the Sun and Moon. Hoku lived in a pretty remote village and was quite content with living there, but one day an entourage of knights from the kingdom of Sol, and they just took him on a "Royal Order" for a test! Turns out Hoku's life is a lot more interesting than anyone ever thought...