Why did naruto get to meet SO6P again?

[BLAZE]

Pretty much wut Necro said

 

[VongolaX]

Because all he was giving them was Seals.

Hashirama and Madara didn't seals at their time

 

[Hokage4]

The sage didn't have a reason to appear when it was hashiramas time. How ever things drastically changed so he needed to step in

 

[Your Creepy Stalker]

Because Hagoromo saw an excuse to hand out the seals that would wipe out all ninjutsu users on the planet, and so save Toneri some time.

 

[SageOfTheTenPaths]

Plot device. Hashirama could and SHOULD have spoken to Madara and Hashi to tell them the truth of it all