Ayagi appears in The Emperor of Nihon-Ja.
Ayagi is the head of a village known as mura which means "village" in Nihon-Jan. Mura is the first village Shigeru, Shukin, Horace and the Emperor's senshi come to after fleeing from Arisaka. They are offered hospitality there by Ayagi. Ayagi then gives his nephew, Mikeru, to them as a guide to the next village, Riverside Village where they will then make their way to Ran-Koshi.
He was killed later on by a scouting part of Arisaka's.