A young boy, Mario, is asked by his father, who works for a video game company, to become the GM. Although he is not keen, as a result of his analysis, he realizes that he can experience the same stimulation he received in the game in real life, and as an experiment, he sets his sights on a quiet girl named Koharu Takashina. Koharu wishes to become “a useful and gorgeous character,” which is the opposite of reality. However, the class she is given is that of a prostitute! After being raped by a rough man, her womb starts tingling, even though she is still a virgin in real life...