Born August 19. Ryuga Kou is Momoka's childhood friend. He is Chinese. He comes from a long line of magic masters.His family's guardian deity is the dragon. Members of the Kou family can predict the future.They also banish demons by using magic.He is smart and good-looking, but he can be arrpgant and sarcastic!In his right ear is a family amulet made of jade. He is ALWAYS saving Momoka when she needs him. He knows that she loves him but he wont admit his feelings for her!
(Info taken from Natsumi Matsumoto's St. Dragon Girl manga)