Kekkei Genkai, or the Reincarnation of the Sage of the Six Paths?
Since Pein(Nagato) belongs to the Amegakure village and doesn't seem to be a naturally occurring Kekkei Genkai in that Village. I want to say reincarnation, but it doesn't seem to fit the series. I have to side with Kekkei Genkai. Opinions? anyone Care?