Kuchisake-onna, famously known as the 'Slit-Mouth Woman,' emerges as a self-proclaimed urban myth, forged by human dread and folklore. Her once formidable reputation wanes as skepticism surrounds her existence. Amidst this uncertainty, 13-year-old Kouichi Sano remains unflustered by her disfigurement, even going as far as playfully taunting her. Dubbing her 'Miroku-chan' in a friendly manner, Kouichi's actions leave the enigmatic figure pondering—has she lost her edge as a terrifying entity, or does Kouichi perceive her as a genuine ally?