There is a solution to prevent a demographic collapse of Japan, without any up-front costs or changes in Japan immigration policy. Specifically, Japan needs to restructure the future pensions of young people to make their pensions dependent on the number of their children. For people younger than 25 - 35 year old, Japan needs to add a 10%-25% increase to their future pension for each child, up-to 3 children. Japan can compensate the proposed pension increase by decreasing the pension of child-free people, who harm Japan economy by self-indulging at the expense of fulfilling their moral obligations to extend their family lines.
