A tournament is being arranged by the king of the country in order to choose who will become the protector of the crown prince, Madara. However, it's Madara's little brother, Izuna, who truly looks forward to the tournament, seeing court will be filled with knights from afar. But as an unknown knight signs up for the tournament, the suspense increases even further. In rides a knight whose armour is as eye-catching and black as his pitch-black horse. Izuna is spell-bound by the mystery knight, and so is everyone else. Who hides behind that armour? And what is the black knight's true agenda? And may it be the case that the black knight is spell-bound by the crown prince Madara, rather than Izuna?