i see. then, start year is 1545, japan will be divided. and, about invasion of Jurchens in 1583--you don't have to make Jurchen faction or Jurchen(manchuria) map. it is like mongol invasion in medival total war2. all you have to do is create 2or3 full stack of rebellion army at nothern Hamgyeongdo(maybe near to Hamhung-bu).how about chosun unit roster? maybe i need those unit roster to search imformation about chosun skill tree or buildings. or if unit roster is not decided, may i search for chosun millitary unit, too?