Saya is imprisoned in this mansion, dressed only in a thin undergarment, her consciousness already hazy. For days on end, she has been bound and tormented without reprieve. Instinctively, she thinks, "If I don't go home tonight, my life will fall apart," though she's unaware of her own thoughts. Gradually, she is brainwashed—yielding to Haruki Yukimura's advances, allowing herself to be bound by rope and violated. Yet her body reacts with heightened sensitivity, her hips instinctively writhing as the ropes press against her most intimate areas. Each time she receives his semen, her skin glistens with an eerie, sensual moisture. Whispering "Why...?" she questions herself, unable to determine whether it's her own body betraying her or the ropes controlling her—her reason now completely shattered.