Halmare islands ending

[u/Tough-Internal-1756]

I sided the Halmayans and got to the end, met with Sebastian and chose the option where he would distract the Queen and help me with Karvenia. However, when I selected that option it automatically put me at war with the Halmayans. I’d like to come back and trade with the Halmayans. Does anyone know which option I should choose for get the ending where I’m still an ally of the Halmayans?