The Rinnegan is also known as then strongest of the Three Great Dōjutsu. It is also known as the Samsara Eye, and very few people have managed to awaken the Rinnegan in Naruto. It was first manifested in the eyes of Hagoromo Ōtsutsuki through Kaguya’s Rinne-Sharingan.
So in reality, it was just a variation of the Rinne Sharingan. Comparatively, this eye is a lot weaker than Rinne Sharingan, but it is still an ability that can complete change the world, depending on how it is used.
Hagoromo acquired it and he gained the status of a ‘God’.
Now Hagoromo possessed the Rinnegan right form his birth, which has left everyone wondering how the Rinnegan is actually awakened.
So how does a person gain the Rinnegan?