The Kuroshishikai, a dark organization whose reputation was ruined by Sweet Angels, was capturing suspicious people and subjecting them to pleasure torture in the name of interrogation. On this day, the figure of a girl wandering around the city looking for a friend who disappeared after being kidnapped by the Kuroshishikai... is Kotone. Information came to Kotone's smartphone from a missing friend... she was heading to that place alone... But it was a trap by the Kuroshishikai! Can Kotone endure the strongest pleasure torment in history?