12 years ago, a nine tailed attacked the Village Hidden in leaves. The Fourth Hokage's wife was giving birth. Although it was kept a secret, a masked man had killed the ANBU, killed the wife of Third Hokage and the nurse and took the baby to Hostage. Although the Fourth Hokage rescued his son, the man kidnapped his wife Kushina Uzumaki and took her hostage as she was the jinchuriki of the Nine Tailed Demon Fox. The Hokage managed to rescue his wife, the Tailed Beast was set free and many people lost their lives defending the village. The Third Hokage used the Dead Demon Consuming Seal and sealed half of the beast into Minato Namikaze and the other in hNaruto Uzumaki Namikaze, the son of the Fourth Hokage. After the seal was done. naruto opened his eyes and everyone was shocked. They were thinking the same thing
'Naruto has the rinnegan'
The Fourth Hokage sealed naruto's eyes so that when he would send chakra to his eyes, it would be awakened again.