Thread:EmperorSigma/@comment-25152698-20140806203907/@comment-25152698-20140806204313

As the transmigrants of Asura and Indra, Naruto, Sasuke, Hashirama and Madara possessed their chakra, and when combined, forms the rinnegan.

As the transmigrant of Kaguya, the originator, the chakra is already one. Thus, granting the transmigrant the rinnegan.