Memumemu-chan, a demon, appears in the life of high school student Hyouta, who mistakenly attracts unwanted attention due to Memumemu's affections. Unable to fulfill her purpose of seducing men and stealing their souls, Memumemu-chan lives a mundane life with Hyouta. Their household also includes a mother-daughter duo who run the apartment complex, known for their alluring presence. Memumemu's ineptitude as a demon often leads to comedic situations.