Japan in the near future, where the existence of darkness, Chimimoryō, is in the dark.
Criminal organizations and companies that have colluded with humans have gone astray, and the times have fallen into chaos.
While the organization of Shinobi called “Anti-Demon Hunters” continues to fight against the forces of the demons, the young Anti-Demon Hunters Asagi, Yukikaze, is a senior Anti-Demon Hunters Asagi to save his missing mother, Anti-Demon Hunters Shiranui. Volunteer for an infiltration mission to the Makai City with Rinko.
