:See Genpei War and the Japanese version of the article. Note that the translation here is very wrong. The Japanese article's first sentence of the summary, translated through Google Translate, is helpful: "Kamakura period of Genpei battle in the motif jōruri that the theme of the "success KeiKiyoshi" action game"; it's not accurate, but native Japanese speakers are referencing the fact that the game has a fictional reference to the conflicts that preceded the Kamakura period. The rough translation on the front of the page doesn't make sense to me, and "Heike" makes no sense at all.