I don't like the mayor of London. I don't like what's happening in England with the Muslims. My wife is British. My Grandchildren live in England. But there are plenty of things wrong there without having to make stuff up.
It's my understanding that while Japan surely has foreigners visiting for business and tourism they do *not* let "foreigners" in to live there.They are an almost entirely homogeneous nation and society.
And specifically that means no moslems.
Of course if you point that "anomaly" out to Mayor "You've Gotta Be Ready For It" he'd call you a racist and an "islamophobe".