Japan has a long history of simply not reporting things (including serious crimes) because it makes their stats look bad. Go read some of the japan-related sub

Japan has a long history of simply not reporting things (including serious crimes) because it makes their stats look bad. Go read some of the japan-related subreddits and they are all full of stories of people getting harassed/assaulted/etc. (or worse) and the police just absolutely refuse to do anything about it. Getting them to file a report for any reason is extremely difficult. And if someone does end up getting arrested for any reason, the entire judicial system is unfair and unnecessarily cruel and inhumane. They can hold you for up to 23 days with zero reason and zero outside contact. Many innocent people's lives have been completely ruined due to this for no good reason. They viciously interrogate people trying to demand confessions no matter how innocent you might seem, because again, it makes their conviction numbers look good. Don't get me wrong, I've been to Japan many times and I thoroughly enjoy all the good things about it, but just like every country, there are a number of quite bad things as well.