"Sex… feels this good…!?" Office worker Aina Hanamiya was a bad girl in high school but put that dark past behind her and set her sights on settling down to find love. One day, Fujita, a former classmate who knew of her embarrassing past, was assigned to her same department. What a pinch! Since Aina looked different, Fujita didn't recognize her. However, Aina jumped to the conclusion that he'd use her past to blackmail her. She planned to seduce him by force and grab hold of his weakness, but… "This might be bad… My mind's going completely blank!" Through their rough but sweet lovemaking, pleasure was awakened deep within her body. She can't stop coming over and over again…!