In the year 2200, corruption in the world has reached its peak; even police officers are involved in terrorist attacks. In Japan, Neorai Industries has successfully launched its Neo Keisatsu joint project with the government, and replaced all existing human officers with A.I powered mechas. Mass riots appeared throughout Japan by ex-officers and worried citizens, but the riots were contained efficiently and almost immediately with the merciless Neo Keisatsus. They soon proved that mechas are indeed better at handling tasks and duties than human beings.
As crime rate lowered and corruption seemed to fade out from Japan, they re-named "Japan" to "Neo Japan" in the year 2202. Many still doubts the Neo Keisatsu project till this day, as machines are still machines, it can still be controlled and if fallen into the wrong hands, the outcome would be unimaginable.