Thursday, January 31, 2019 
K-pop proved its popularity in Japan through the 'Top 10 Most Popular Idol Group' rankings.
From January 8 to January 19, a total of 620,588 LINE users in Japan voted for the most popular male and female idol groups.
TVXQ at #5, Big Bang at #7, and BTS at #10 are the three K-pop boy groups to rank in the top 10.
For the girl groups, TWICE is ranked at #6 and Black Pink at #10.
You can check out the detailed rankings for the male groups here and for the female groups here.
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TVXQ are still the kings and Big Bang hasn't performed in Japan in all of 2018 and they're still on the list.
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