Japan's population has finally fallen to two-thirds due to the declining birthrate and aging population. The Cabinet passed the "Law to Promote Childbirth'' to promote rapid population growth. It was a bold bill that included: - acceptance of polygamy - lowering the age of marriage and childbirth - making childbirth, childcare, and education free of charge, etc. It was also a bold bill that would provide special benefits to companies, organizations, etc. that promoted polygamy.

Naturally, there was no end to the number of places that promoted this, and the public order deteriorated to some extent. Yoshio lives in such a world. Yoshio also became a target. Those targeted will be forced to transfer to designated areas. Even if you receive an allowance, that does not mean that you are not worried about the sudden change in your environment.

That's understandable, because the place Yoshio transferred to was a particularly unsafe place.