See Suo Masayuki’s movie SORE DE MO, BOKU WA YATTENAI (I Just Didn’t Do It), everyone. I did. It’s an excellent illustration of court procedure in Japan — long, drawn-out, well researched, and necessarily tedious. Experience vicariously what you might go through if arrested in Japan.
Don’t think it just won’t happen to you. Random searches on the street without probable cause are permitted by law only for NJ. If you’re arrested, you will be incarcerated for the duration of your trial, no matter how many years it takes, even if you are adjudged innocent (the Prosecution generally appeals), because NJ are not allowed bail (only a minority of Japanese get it as well, but the number is not zero; NJ are particularly seen as a flight risk, and there are visa overstay issues). And NJ have been convicted without material evidence (see Idubor Case). Given the official association with NJ and crime, NJ are more likely to be targeted, apprehended, and incarcerated than a Japanese.
If it happens to you, as SOREBOKU demonstrates, you will disappear for days if not weeks, be ground down by police interrogations, face months if not years in trial if you maintain innocence, have enormous bills from court and lawyers’ fees (and if you lose your job for being arrested, as often happens, you have no income), and may be one of the 0.1 percent of people who emerge unscathed; well, adjudged innocent, anyway.
Like getting sick in the US (and finding that the health care system could destroy your life), getting arrested in Japan could similarly ruin yours. It’s Japan’s SICKO system…