Asami's last name suggests that he's been adopted by Garleans somewhere down the line. I get the feeling his arc will be having to decided between his nationality vs his culture. I'd imagine him figuring out how Yotsuyu got to be the way she is/was will play a part in that.

Eureka being possibly tied in to where the Isle of Val went is a good direction to take it. Here's to hoping it won't be the next Diadem and result in making this expansions relic impossible to get later down the line.