>>213044377 (OP)What Japan needs to do is build a walled compound with hostels in some tourist-y area. Young people from meathead societies get to stay there for cheap (Americans, Australians, Serbians, not Canadians, NZers or Scandinavians) but they have a limited time in Japan and they have to carry a special ID at all times.
They can leave the compound and do tourist shit, but by living there they have to agree to periodic militia service: For every week they stay in Japan they have to dedicate 2 days of being led around by Japanese police, security guards, traffic conductors etc. Then when the Japanese law enforcement see a foreigner doing some retarded shit that baffles their autistic sensibilities they deploy the Foreigner militia to resolve it as per the customs of their people.
A varangian guard of retarded white dudes would suppress the delinquent tendencies of a non-Japanese tourist and immigrant population.