Kuroma Tatsushiro

He is a young man with grey hair and green markings on his face. Like Akari, his younger sister, he has red eyes and small horns on his head, signifying a connection with the Genryū, the five dragons that he awakens in the hopes of absorbing their power. He has numerous tags on his robe that allow him to use elemental attacks, and a large scroll strapped to his back with a carved dragon's head on one end. The light green medallion on his belt matches the one Akari wears around her neck, and, presumably, is a symbol of the Genryū.