Ok, fine that everyone agreed on it before it happened :). Bedroom Lazarus; I would say hold on taking the castle territory as I had planned with krai folk cast winter winds on that square (as that ritual would block anyone entering and taking over said square for 2 seasons). If negotiations do not go Takeda's way (krai folk refusing do the ritual) then you get the castle square. Also not sure you can capture and invade in same turn.