Or here's an idea...madara knew about the red steam...yet he never met might gai or anyone that knew that technique..they did a anbu kakashi...do a lost episodes of madara...like when he left hashirama...
Or here's an idea...madara knew about the red steam...yet he never met might gai or anyone that knew that technique..they did a anbu kakashi...do a lost episodes of madara...like when he left hashirama...
Maybe zetsu witnessed the fight with Dai and the swordsmen.
What the point of filler if its not canon? Let say in filler Naruto destroy a planet but it have zero meaning to canon story as Naruto never did it in manga.
Same also to any suggestions here
How cool would it be if he fought someone who used the 8th gate after leaving Konoha? Obviously this guy would be much weaker than Gai if he didn't kill Madara, but I think that'd be cool to see
1st, 2nd and 3rd Ninja World War, Akatsuki vs jins fights, Oro&Danzou, Minato's hype, random anbu characters in real ninja missions, the days after the 4th Ninja World War.