In the medieval Shenzhou, Japan, which was divided and ruled by various countries. In the sky above it, the city ship "Musashi" consisting of eight ships sailed... in the distant future. After the "Re-play of the Unification Conflict", each country carried out the "Holy Scripture" that linked the fate of mankind as a reproduction of the original history. Then, there are various people who hide their confusion and determination in their hearts and move forward to open up the future. With the overlapping medieval world as the stage, the struggle between students in the school countries is officially staged!