On the shores of the Yamuna river, I saw an Asian looking person. I asked my driver if they have lots of Japanese people visiting the Taj. He was positive.
At the same time he pointed out that the man I saw was probably Korean not Japanese.
How could he tell at a distance?
It's rather obvious...
It's not the season for Japanese people! :-)
Koreans visit mostly in February.
Japanese in March/April.
French/Italian/Spanish in July/August, Germans and English from September onwards.
(Actually, Europeans come all year round, these are just the peak times.)