Board Thread:Theories and Speculation/@comment-35023081-20190918151946/@comment-35023081-20190918165742

Frwt wrote: Shouldn't he need some uchiha dna? I mean lets say he wants to use susanoo, kakashi had done that when the chakra of obito was infused in him, there is that thing tobirama said about some special chakra the uchihas awake when the unlock the MS, I think the only evidence for this is the last film where kakashi look at the piece of moon and can't do nothing, but sasuke put up the susanoo and cut it, so I'll assume that kakashi (sadly) can't use the susanoo because he isn't an uchiha (doesn't have that chakra)

So what I wanted to say is hashirama will need to trasplant some madara cells in him so they produce that chakra and he uses it combined with his chakra to awaken the rinnegan

(Still this is only a guess)

Are the eyes not enough? I mean technically they have tissue and ocular Chakra from the Uchiha which is as specific to the clan as their genes are. I don't think he would need anything else. And he would still be able to use Madara's Susano'o in the same way Madara could use Hashirama's Wood Style Ninjutsu. But Hashirama would only need the eyes because the power of Indra and the Uchiha stems from their Visual Prowess which is different to Ashura and the Senju who have a particular type of Chakra and life force to them. As for Kakashi, I'm sure that if he had gotten both eyes from Obito rather than one and then awakened the Mangekyo Sharingan in both, he would always have been able to use Obito's Susano'o no problem. I don't think it is ever said you need Chakra specfic to the Uchiha Clan to use the Sharingan's Visual Jutsu. You just need a pair of Mangekyo Sharingan.