Question: how sasuke get his rinnegan?
Answer: When Sasuke met Hagoromo, What really happened was Hagaromo casted jutsu to unlock the Yin half himself which then in turn unlocked the Rinnegan but Sasuke first had to have Senju and Uchiha Chakra for him to have contact with Hagaromo; Secondly, Sasuke had implanted Hashirama cells from Kabuto to physically have the ...