Topic, I think it's a bug. (There's always at least one Daimyo bug in each patch...). I was playing Shimazu today when I saw Japan DoW Yamana with the Reconquest CB (of Harima, where Hosokawa has a core). Japan then moved to annex Yamana. This, I assume, is not intentional, and simply adds to the number of ahistorical Ashikaga unifications the game already has. Can you fix this in the next patch? It's not too big of a deal if it's just Reconquest, but if Conquest and the new Sengoku CBs are included as well... Japan ends up being nearly as unplayable as it was in 1.7.0.