I doubt even Kishi would create a spammable Izanagi without Hashirama's DNA involved.
Still its pretty dumb that Madara used Hashirama's cells to survive, since I doubt Hashirama was foolish enough to let him go without being certain of his death, and I also doubt that he implanted Hashirama's tissue or whatever during those moments, since if he did I don't doubt Hashirama would've saw his wounds regenerating
^obviously he just picked up Hashiramas dismembered arm or something and stuffed it into the hole in his chest like a plug... actually it could have been even a head now that I think about it... would explain the face on Madaras chest. I'am sure regrowing his head wouldn't be much of an issue for Hashirama, thanks to his cells of course.
So this wasn't a sword, but Hashirama's arm through his chest?
Nope, he pulled the sword out and then stuffed the arm (or head) into there to stop the bleeding.
But the Rinnegan gives you yin-yang release (create anything from imagination) and Gedo techniques. Rinnegan users shouldnt need something like Izanagi.
Its not imposible for Hashirama to make a mitake and belive Madara to be dead. Seriously Hashirama was not a bad guy, he was defending his position and the village. When Madara got something that looked like a mortal woud Hashirama probably just walked away. Afte that... I don't know. We could have a ton of posible outcomes.
if the next chapters confirms that ems don't go blind after using izanagi or izanami than ok it's very possible but if not than it's just pure luck and vital organ avoids
What saved Hashirama from Madara were his healing techniques without seals. If he didn't have them, I can't see this guy winning.
We can only hope Kishi is going to recreate that fight in the manga. Show us what happened in a flashback or something. It was probably 1 of the most epic fights you could see in this manga. Huge forests of wood element, Ultimate Susano, Kyuubi etc.
Without his sharingwn/Ms/ems, madara is just a fodder to hashirama.
And one thing, the healing power of hashirama isn't the reason why he's a freaking monster. Because hashirama's caliber as a ninja that makes him superior to madara.
Remember what madara said to the kages?
Madara : only hashirama can stop me now.
Meaning, only hashirama can stop madara's perfect susanoo. Not by his freaking awesome healing power, but with his awesome and godly caliber.
Quite honestly (and I had this personal opinion on the matter even before I knew about Hashirama's regeneration), but I think he won by outlasting Madara.
MS is well known to be incredibly chakra draining. Not only can Hashirama regenerate, but he can create a forest worth of steel-hard wooden defensive structures to protect from Susanoo weapons and Amaterasu, AND he had regenerating clones, AND he had the ability to subdue Kurama (which likely took hella chakra for Madara to both summon AND control).
I think Madara just threw everything he had at him until he got tired.
So, just accept it. Hashirama is much more superior to madara. We don't know anything about their fights, but madara clearly admitted that only hashirama can stop him and his perfect susanoo. So, do you honestly believe hashirama can stop perfect susanoo by his healing power? It doesn't make any sense.