The seven deadly Sins(The Tailed Beast)

3000 years ago there was a beast called the 10 tails and he was active during the holy war two sides were part of this war one light one dark but the 10 tails almost destroyed the world however Hagoromo Ōtsutsuki divided the chakra into nine separate pieces creating other tailed beast but they were separated so no one can find them however the Demon Race created the Titans and they absorbed the Titans how Ever the one Tails and the Nine Tails escaped from the Titans and eventually they chose you to be there partner because you were the child of prophecy