After Helios

I just realized you guys finished the game but I haven’t played since the latest content was the big battle at the top of the Jade Tower. My question is: Where am I supposed to go to continue/Who do I talk to? I tried looking around a little in game to re-familiarize myself but I’m clueless… Thanks in advance!

After beating Jaern, go down from the tower and surf Southwest. You’ll find the cave of steam, enter it and be on your merry way.