Brilliance of the moon / Hearn, Lian

Takeo, secretly wed to his beloved Kaede, sets out to help her reclaim her lands and avenge the deaths of his biological and adoptive fathers, all the while aware of the prophecy that he must fight five battles--four to win, and one to lose.

Takeo and Kaede combine their powers in order to do battleagainst Arai Daiichi, the warlord who controls most of the Three Countries.