Kuchisake-onna, also known as the "Slit-Mouth Woman," is a self-proclaimed living urban legend, having been created from human fear and superstition. Unfortunately for her, she is losing notoriety as people have begun calling her legitimacy into question. To add to her worries, not only is 13-year-old Kouichi Sano unfazed by her oral deformity, he also doesn't hesitate to tease her! Amicably referring to her as "Miroku-chan," the boy leaves the masked myth wondering—is she failing as a monster, or does Kouichi view her as a genuine companion?