There's quite a lot of interviews with western women on this subject on YouTube. Can't remember the channel.

I felt so incredibly safe in Japan and I don't remember even seeing a cop. As an American, that felt crazy to me for how large those cities are. I had some expectation of that but it still surprised me, particularly in the touristy nightlife districts with the street drinking.

Obviously seems like there might be some downsides to the culture that leads to this.