>>483214most Japanese immigrants to US go to Hawaii, West coast like SF/LA/Seattle, or NYC. Majority of Japantowns are in California. Japanese are super quick to assimilate, they have good PR so ppl are super happy to accept and tokenize them rather than reject. (Ppl get annoyed by Chinese who can't speak English but enamored with the similarly ESL Japanese) and since they usually have more money tend not to create immigrant enclaves like poor Chinese and Koreans, etc.
Japanese immigrants also seem to be black sheeps who didn't fit well into Japanese society, so they're less likely to use chain migration and bring the whole family over. Japanese who are happy about Japan just stay there. Most exchange students leave after their studies.
Also because of the Japanese internment in WWII, more recent Japanese immigrants are cut off from the generational Japanese Americans so there's like two separate groups. And a lot of the generational Japanese Americans whitewashed the fuck out of themselves because of the internment prosecution trauma. So there's a lot of weird beef where the new immigrants don't feel the JAs are "real Japanese", but the JAs control all the Japantown associations and are the gatekeepers and stuff.
I think Japanese immigrants have a bit of a snowflake issue, or maybe it's the sudden attention for being kawaii Japanese uguu, but they don't group up like other immigrant groups and seem to prefer to be tokens.