Due to the herbivore of men, Japan is facing a major crisis due to the rapid population decline. Since the government is devoting all its efforts to the training of sperm collectors in preparation for the in vitro fertilization method, which will be enforced from next year, it has become mandatory to take a sperm collection test at a school with a grade of ○. First-class collectors are guaranteed high status and income as quasi-public servants, and sperm collection girls who aim for good grades flooded.
