Tales of the Kingdom, Vol. 1 (Volume 1) by Asumiko Nakamura

Purple-eyed Adarte, blue-eyed Adolte. One enveloped in light―the graceful son―and one shrouded in darkness―the prisoner. Even as their souls are drawn together, destiny would tear them apart. Elsewhere in the kingdom, a heroic king is served by an enigmatic aide from a faraway land. His path has torn him from his dearest kin and placed him in the halls of power―to what end...? The first of Asumiko Nakamura’s beautifully wrought tales set in a fantastic kingdom of intrigue and heartache...