Beacuse its Kishi-san manga not yours XD XD..... just kidding i think madara is somehow related to him as his descendent or something that's why, other than that it just might be a co-incidence that's all :gn:
I hope ti will be shown in the next manga about the SO6P brother and the jubi inside him and what happened to him and this manga series is taking a deep and a vast discussions in all the threads hope we would find the answers to all our questions in the upcomming manga
In life brothers share the same DNA as their parents, so its possible that so6p linage could recreate his DNA makeup at some point in future generations, but the likely hood of his exact genetic makeup being expressed in future generations would be very unlikely ( in life that is )
Yeah But there is a great talk going on that indra might have reincarnated into madara and after his death he passed on to sasuke and there is also a relation that sasuke is older in months than naruto