Board Thread:Theories and Speculation/@comment-25139119-20150820032806/@comment-3568954-20150821191205

Thekillman
 * True, but those wars were irrelevant to the modern ninja world:

Not exactly as the databook states the Shinju was created from the blood of countless warriors who died in war so all the wars that existed before the shinju irrefutably effected future generations as it ended up creating the shinju and the shinju fruit and then kaguya ate said fruit and molded her energies together to create chakra and therefore its simply a revolving circle i wouldn't doubt it if in the naruto future all of the deaths caused in the 1st 2nd 3rd and 4th shinobi world wars caused a new shinju to be born