In the place of Shikizakura (cherry trees), where autumn leaves and cherry blossoms are flourishing and where the human world intersects with the demon world, a ritual to save the human world is about to begin…
Kakeru Miwa, a high school student, gets involved in a battle between powered suits and oni that emerge from the demon world to prey on Onis manifest themselves in this world by possessing humans. Only “Yoroi,” powered suit that is a fusion of ancient secrets and cutting-edge technology, can protect people from onis. Kakeru puts on a Yoroi by chance and becomes a semi-official member of a team that fights against onis.
Determined to become a hero, Kakeru battles Onis to protect Ouka Myojin, the shrine maiden destined to save the world. In the season of Shikizakura, in midst of autumn leaves and a flurry of cherry petals, Ouka performs a dance as a shrine maiden. At the place where the past and the future, this world and the alien world, people's thoughts and hopes all meet, a tale of heroic action-adventure begins!
