Beneath an Opal Moon - Eric Van Lustbader

Monstrous evil stalks Moichi Annai-Nin, blood-brother to the Dai-San, the Sunset Warrior. The months of peace in the port of Sha angh sei have been abruptly shattered by vicious. sadistic slaughter.

Across the inhospitable continent of man. Moichi finds he must pursue a devil of awesome proportions to regain his lost love. to avenge a ghastly murder. to find the fabled and mysterious Firemask.

Into the land of the Opal Moon Moichi must go, unknown and forbidden territory filled with a magic beyond understanding. a menace beyond comprehension, ruled by a sorcerer queen named Sardonyx who holds the fate of the world in the palm of her hand.