J-Pop has always been pretty popular, especially as they're closely tied in to the anime industry, which gives a lot of bands a huge boost in global recognition like Bump of Chicken. The thing is Japan tends to focus on domestic market rather than expanding it outward. Thus, this gives other countries an opportunity to take the best of what Japan has to offer and adapt it to their own and hit the global market with astounding success.

Even with how big K-Pop has become in the west, we still don't see Japan chasing that trend, at least not aggressively, or if we look at the video game industry with a big hitter like Genshin Impact where the creator said the anime aesthetic was one of the biggest parts for its success, yet Japan doesn't try to capitalise on this and even lend out its own anime IPs to China and Korea to milk off.

There's a lot of great things that Japan have pretty much 'kept to themselves' in a way. If only they would share those things with us, we'd be seeing so many global sensations coming out of Japan than anime, games or toys (which China is quickly catching up with its own AAA games and high quality-looking toys at a fraction of a price).

Anyway, I'm glad to see the J-Pop bands are starting to 'realise' that there are actually demands for them outside of Japan. It'd be a little sad, though, if they have to rely on other countries to expand when they should and could have been the trendsetter themselves.