JP Server Worlds

[Serilda]

If you speak Japanese and understand the culture they're pretty great, to be honest. I recommend avoiding the really small ones though as they're very, very quiet and some content is basically impossible - I fantasise about one day downing Coeurlregina but even now we still struggle to get more than 2-3 people fighting her before the FATEs time out!

Party finder is extremely active at Japanese peak time so you should be able to join up with people wherever you end up. The main consideration is datacenter, I think. There are a lot of Oceanic players on Elemental so you'll find a blend of JP/EN to choose from, whereas Gaia is fairly solidly JP-only except for the occasional clump of foreigners. Timezones are probably the biggest issue you'll have since outside of JP evenings things really do slow to a crawl, whereas in EU/NA there's a bit more steady activity in the twilight hours. Not sure if the servers with a big EN community (e.g. Tonberry/Masamune) have the same problem.

If you choose Gaia, I believe Bahamut is the most active world by quite some margin.