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Haruna, who is not good at studying but loves sex, has been told she will have to repeat the year, and her smart boyfriend is worried about going to college alone. One day, she finds a hoax article online that says "men's IQ increases to 3 when they ejaculate," and decides to make him cum over and over with her breasts and make him repeat the year together! From that day on, whenever her boyfriend opens his textbook, she immediately presses her breasts against him...