World Map

[Zohar_Lahar]

It's definitely Daitenzan, looking at the in game map.
It's also Nagxia, rather than Naaxia, or Nacxia. Zooming in on the world map, it's pretty clear.
I'm pretty sure it's Ryakgyr Peninsula rather than Hyakgyr. It's very difficult to make out the later letters, but I'm fairly confident it's an R.

Nagxia is confirmed by fishing log entries.