Japan has serious zoning law, but the issue is that it's reasonably scoped zoning that doesn't do things like "only single family homes here, no commercial properties including ban on corner shops" - they define what could be termed maximum allowed nuisance level, and the defined categories create a spectrum with overlap at both ends of each category. Even category 1, low rise residential, permits low-rise multiple units, small offices and shops etc. as well as certain public utility buildings (schools and the like). Compare it with zoning (or zoning hidden under other bylaws) in USA where you can end with a big area that permits only single family houses - no shops, not even a small grocery store, etc.