The scenario still needs a little work to be a full beta. I am going to post it on my own site, so that problem is solved. Currently, I am adding rebel states and the historical events that might help them come about.
Hokkaido wasn't colonised by Japan until 1799. You could shove in the Ainu into Sendai and HokkaidoOriginally posted by das
First of all, Sendai and hokkaido is still not colonized in 450.
Yamato kingdom should rule rest of Japan.