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Well, I've found 1m in various sources - I am talking about people of Japanese descent, not necessarily people born in Japan.

https://en.wikipedia.org/wiki/Japanese_Brazilians

many different data I am founding lol it looks like the last proper data came from 1987 which had this number in the whole Brazil like your print screen says. I found a 2017 data from japan embassy saying 326k in Sao Paulo.

In the 2022 Brazilian census, 850,130 people identified as "yellow," a designation by the IBGE for people of Asian descent: Japanese, Chinese, Korean.

that looks like a more accurate info since IBGE is the official Statistics of Brazil, but we don't know for sure how many of these 850 are from Japanese ancestry. There was a big immigration of Chinese in the last 20 years for sure

Maybe it also depends on the metrics, I can imagine many people only have one parent from Japanese ancestry, and they may, or may not be counted/identify themselves as Brazilian Japanese.

I think I was told this figure in Sampa tourist centre too, but I can't really guarantee, it's been over a month :)