Naruto: So I Transmigrated Twice?

I live in Konoha and was in the same year as Minato Namikaze. I pushed myself to catch up during my time at the Ninja Academy, but one day my great-grandfather returned from the dead and told me that I was his reincarnation, and he was my past life. He had transmigrated during the Warring States period, and without a special bloodline, he had no way of keeping up with the truly great figures of his age. So he found a way to give me, his descendant and reincarnation, the bloodline of the Six Paths family...