Japan is the 2nd biggest music market in the world and definitely worth a lot of money for kpop groups that popular there. We have seen a lot of groups abandoned Korea to solely focus their promotion in Japan.
I have read a discussion last year about which 4th gen gg is the most popular in Japan and there was a huge fight from few fandom (I don’t think I should name but it was a fight between 2 fandom mostly) saying their faves definitely worth the tittle. Now I wonder if it is still up to debate or if we have clear winner now? But the competition among 4th gen gg in Japan definitely more intense than in 3rd gen where Twice sweep everything from sales, tours to charts.
But the question is, who the most popular 4th gen girl group currently Japan?