Regardless of age and mental maturity, every woman in Doujigiri City has a small stature almost indistinguishable from that of a child. Because of their seemingly frail appearance, they are not only the targets of men with questionable intent but also demonic oni who feed on their essence. Against these vile threats, the "Doujimori'' serve as the city's defense force and protect the women in order to maintain peace. Ringo Komuro is a young Doujimori who is often ridiculed by her comrades for being clumsy in combat. However, when the city's princess, Nonomi Minamoto, returns from her studies abroad, Ringo begins to experience a series of events that will change her life forever. [Written by MAL Rewrite]