Shikizakura is a place where cherry blossoms and autumn leaves bloom together, creating a one-of-a-kind setting. There, a vital ceremony to rescue humanity is about to take place. Kakeru Miwa, a high schooler, finds himself thrust into a group aimed at battling the Oni, creatures that bond with humans to stay in the world of the living. Only the ancient secrets and state-of-the-art Yoroi power suits can defend humans from the Oni's harm. Kakeru strives to become a protector of Ouka Myoujin, the famous shrine maiden, and the planet. He's prepared to combat the pervasive Oni. During the Shikizakura season, Ouka dances in the stunning surroundings of cherry blossoms and autumn leaves. Get ready for an epic clash, where former and future worlds, transient and spiritual realms all mix in a show of heroic force.