That's interesting. What has Twitter done recently to improve the experience of Japanese users?
Trending topics have shifted. Allegedly they removed some manually-curated trending system that was previously in place, which may have been a system that worked well for some demographics but wasn't working great for Japan.
That is mildly surprising. I would have assumed a manual process would have done a better job of adapting to different languages and cultures than an automated process unless that manual work was done by people outside that cultural context.
I'm using the site more now. Japanese twitter feels a lot more natural and nicer than it did pre-Musk.