When reports of mysterious disappearances draw Insect Hashira Shinobu Kocho and Love Hashira Mitsuri Kanroji to the isolated Matsushita Village, they expect a routine hunt. Instead, they walk into a meticulously prepared trap orchestrated by Doki, a insidious demon whose Blood Demon Art turns a warrior's greatest strength—their Total Concentration Breathing—into their ultimate downfall.
Infecting his victims with an aphrodisiac venom that amplifies physical sensitivity fiftyfold, Doki strips the Demon Slayer Corps' elite of their martial discipline. One by one, the proudest female swordswomen—Shinobu, Mitsuri, and Shinobu’s loyal Tsuguko, Kanao Tsuyuri—are captured, bound, and subjected to a nightmare of sensory overload and relentless degradation.
As physical pleasure is weaponized to break their unyielding resolve, the lines between resistance, submission, and dark craving blur. Bound in a secluded cavern away from the light of the sun, the proud Hashira must face a terrifying reality: when the body betrays the mind, even the strongest spirit can be rewritten into an obedient pet.