Summer Demon

"Visit the ancient retainer that exorcises evil." Nico's mother, Ibuki, has delivered a new prophecy. Ibuki has an idea who this "ancient retainer" could be, and tells Nico and her familiars to visit them. They were a bit of a ways away, so Nico, Morihito, Kanshi, Keigo, and Nemu head to the lands where this ancient retainer lives with a summer vacation feeling.