Madara reveals himself to be Naruto's grandfather. He infused both his cells and Hashirama's cells into Naruto. Naruto becomes strong as a result, awakening the sharingan and later the Rinnegan.
Naruto awakened his family bloodline, the Kamigan, after a brutal attack by the villagers of Konoha. However, Kyuubi's influence turned it into something else. The birth of a new bloodline. AU in some but mostly follow CANON.
I do not own Naruto nor this story.