It is designated as a densely populated area by the census and is updated every five years.

[No-fly zone]
Under the Civil Aeronautics Act, the following three airspaces are prohibited from flying as airspaces where there is a high risk of colliding with manned aircraft or harming people on the ground if they fall.
1. AIRSPACE AT A HEIGHT OF MORE THAN 150 M FROM THE SURFACE OF THE EARTH
2. Airspace around the airport
3. Densely populated ground (DID area above)
When flying in this airspace, you can only fly if you have received [permission / approval] in advance to ensure safety.
[Approval of the Director of the Regional Aviation Bureau and flight training]
In addition to these, if you want to fly an unmanned aerial vehicle, it is of course necessary to comply with the prohibitions of some flying methods
It can only be flown if the director of the regional aviation bureau cancels, permits, or affirms it under certain conditions.
[Further strengthening of regulations by revision of the law]
Under the revision in December last year, it is mandatory to report the flight plan (submission in advance), pre-flight inspection, flight records for each flight, periodic inspections, and accident reporting.
We apply to the Tokyo Civil Aviation Bureau for a comprehensive annual application, receive permission approval, apply for a flight plan in advance, conduct flight records, etc., and then perform aerial photography using drones, high-altitude inspections, etc.