Nitori is the gorgeous, big-breasted senior assigned to train a new adult employee. During work she is terrifyingly strict and constantly scolds him for being too slow. But one night they stay late together, and the moment they are alone after hours, she suddenly becomes warm and affectionate. The contrast is almost enough to make him cum on the spot. Then she offers him a reward for working hard: sex with the sweet, busty senior he has been fantasizing about.