Hibiki, a woman who obtained top-secret information from a perverted politician, stepped into a dangerous organization to monopolize enormous profits. From that moment, her fate began to spiral out of control. Caught in a inescapable situation, she was subjected to a captive life as a 'pet,' to be toyed with out of curiosity. Her entire body was bound, and a cruel training began, allowing no movement. Her reason was stripped away by crotch rope training, leading to humiliating involuntary orgasms. Continuously violated while restrained, an inescapable pleasure began to erode her body. Furthermore, a wooden horse torture awaited her. While going mad from the pain, her demonic true nature awakened. Intense piston thrusts shattered the boundary between pleasure and despair. What she reached at the end of humiliation and suffering was a twisted pleasure from which there was no turning back. Witness the forbidden restraint hell into which the captured succubus falls, through bondage, torture, and awakening.