Is the movie shinjuku incident true?

Shinjuku incident is a film that Dong Shengyi spent ten years collecting materials to prepare. This shinjuku incident originated from the exchange of fire between Japanese and kabukicho immigrants seen in Asia Weekly that year. After textual research and artistic processing by Dong Chengyi and others, shinjuku incident is only a background of this exchange of fire. More importantly, how people unconsciously change in such a living environment.

It's not true.

But it means exposing!