The series 'Kao no nai Tsuki' plunges viewers into the twisted fate of Suzuna Kuraki, a seemingly pure shrine maiden destined for a depraved ritual. Upon arriving at her ancestral mansion, she meets her arranged fiancé, the brooding Koichi Hayama. A mysterious lunar force permeates the estate, awakening insatiable carnal desires in all who reside there. Suzuna’s initiation into her sacred duties is a brutal deflowering, forcing her into ritualistic fucking with Koichi to appease an ancient deity. The narrative follows their repeated, graphically depicted sexual encounters, where Suzuna’s initial resistance dissolves into raw, screaming pleasure under Koichi's relentless thrusting. Every episode showcases her body being used, her orifices filled, and her mind breaking as the curse demands more potent sexual offerings. The plot deepens with incestuous undertones involving her seductive mother, Yuriko, and lesbian encounters with the subservient maid, Tomomi, culminating in a series of orgies where every character's lust is unleashed and Suzuna is bred to fulfill her cursed bloodline.