Yanagi Yukito, an orphan, has a fateful encounter with a peculiar disciple who was once under the tutelage of his late father. This enigmatic individual brings Yukito to his birthplace, Ayakajima, a collection of seven islands shrouded in rumors of mythical creatures known as "Mitama" and dragons.
In this extraordinary setting, Yukito reunites with his father's other two disciples, whose duty is to safeguard the delicate balance and harmony of Ayakajima. However, as events unfold, the very foundation of this harmony begins to crumble, posing a grave threat to the islands and its inhabitants.