Her new girlfriend appears pure and innocent at first glance, but in reality, she's an extreme masochist craving BDSM. She repeatedly demands outrageous acts like "choke me," "grip my body tightly," and "grab my head and deepthroat dick." Her boyfriend, confused by these intense requests he's never experienced before, struggles to respond—yet pushes forward for the sake of his beloved. However, any sign of hesitation only makes her angry, as she insists, "do it harder." Caught in her relentless desires, he gradually discovers his own dominant side, evolving into a sadistic novice determined to dominate and torment her.