Every woman in Doujigiri City, regardless of age or mental maturity, possesses a small stature that is barely distinguishable from that of a child. Their seemingly frail appearance attracts not only men with questionable intent, but also demonic oni who seek to feed on their essence. To safeguard the inhabitants, the "Doujimori" serve as the city's protective unit, defending the women and maintaining peace.
Ringo Komuro is a young Doujimori who often faces scorn from her colleagues due to her clumsiness in combat. Nevertheless, when the city's princess, Nonomi Minamoto, returns home after completing her studies overseas, Ringo's life takes an unexpected turn. She becomes embroiled in a series of events that will transform her life forever.
