You know, Johnny Somali fled Japan, went to South Korea, tried the same shit, got arrested and is now in South Korean prison. I think it briefly made news but nowadays I doubt most people remember him.
If you have a functioning society and a petty criminal, you can just... arrest them. No needs for all those xenophobic drama.
Or not, I guess. After all, what am I to tell Japanese people what to expect from their own police?