The price of indulging in excessive desires was a hell filled with restraint and ropes! Hibiki, a woman who obtained top-secret information from a perverted politician, steps into a dangerous organization in an attempt to monopolize enormous profits, and from that moment, her fate begins to spiral out of control. Captured with no escape, she is imprisoned as a 'pet' toyed with out of curiosity. Bound from head to toe, unable to move, she is subjected to cruel training. Her reason is stripped away by rope bondage, and she experiences humiliating involuntary orgasms. Continued to be violated while restrained, the inescapable pleasure eats away at her body. And then the wooden horse torture awaits! As she goes mad with pain, her demonic nature awakens. The fierce thrusting destroys the boundary between pleasure and despair. At the end of humiliation and suffering lies a twisted pleasure from which there is no return. Bondage, torture, and awakening. Witness the forbidden hell of restraint as the imprisoned demonic woman falls!