Sanae, a female teacher in charge of social studies, harbors a strange fascination with the history of female prisoners. Within her fantasies, her imagination spirals into a world of torture—evolving into a hellish realm of terrifying beauty and cruel pleasure, featuring stone carrying, the wooden horse, okara torment, and prisoner bindings. These intense visions tear deeper into her body, weaving a grotesque beauty and the hidden allure buried within suffering. This dark fantasy transcends mere imagination, transforming into an eerie charm etched into her very soul.