The Arbitrator.The war has ended and peace finally came to their country. People are rebuilding their villages that were destroyed during the rebellion. Teoro, his wife and the other villagers returned to their village of Yamayura while Hakuoro, Erurū, Arurū, Oboro and company remained in the imperial capital. A crowning ceremony was held and Hakuoro became the emperor of their newly build nation. Benawi and Kurou swear allegiance to him and maintain their ranks. As their life in the capital continues, mediators from Onkamiyamukai came. The Onkamiyamukai are mediators authorized by the high temple of Witsalnemitea who mediate relationships among nations. The mediators are led by a priestess with white wings named Urutori. She has an aide named Munto. They came to Hakuoro for friendship and to observe the new nation. Hakuoro volunteered to guide them. But due to his duties, Hakuoro asked Erurū to guide the mediators. One night, Urutori stumbled on Erurū’s medicine room and had a talk with her. Urutori knows about Erurū’s grandmother Tusukuru because she once taken interest in medicine but stopped due to her duties as the priestess of Onkamiyamukai...