Bureaucracy
Official: Efficient, organized immigration process
Reality: Immigration processing is actually reasonably fast by international standards (the HSP visa's 14-30 day processing is impressive). But daily bureaucracy is extraordinarily paper-based. Expect to visit your local city hall (shiyakusho/kuyakusho) multiple times with physical documents for: residence registration, NHI enrollment, pension registration, My Number card. Many forms are Japanese-only.

