Board Thread:Theories and Speculation/@comment-45444155-20200826144850/@comment-32685487-20200827213255

Like I pointed out before that changed eyes are the only indicator of Six Paths Senjutsu when one is not a TTJ, proven by Naruto's pupils being the only change, while a Dojutsu user does not have a pupil change while the dojutsu is active. Obito was using a bit of SPS that he stole from Madara.