[@ClocktowerEchos]

Sounds good. You're still pretty close to me with the Eastern claim, so I'd also be willing to write history with you.

How about somewhat hostile relations and a history of our nations sending privateers and pirates against each other? Historically Japanese pirates were a thing and they caused hell for Korea and some other nations on the Pacific, so it would fit with Yamatai's theme. Voltus even mentions a history of pirates plaguing Ventium before they modernized their navy and secured the coastlines, maybe those could have been your pirates?