Japan is burdened with various problems such as a declining birthrate and aging population, a decline in economic growth rate, and an increase in the burden of social security. The government, which concluded that everything would not be solved unless the problem of the declining birthrate and aging population was solved, finally took action and enacted a new bill to break through this problem and took the step of experimental implementation. It was a proposal for a new way of schooling, and its unprecedented content was that sex was a compulsory subject. A transfer student comes to such an academy. What kind of shocking daily life did he see!?