ok, first timer here so let me pop my cherry:
I noticed there are a lot of u guys talking about the scroll on naruto's back for this chapter. This SCROLL IS THE TOAD CONTRACT.
Remember that is was given to him by Jiraya as a kid and naruto had to sign it with his blood in order to be able to summon the TOADS and to be able to enter the Toad realm. When Naruto signed it, he noticed that the 4th had also signed it and Jiraya explained him how the 4th was the owner of the scroll for a while before he died. If you remember when the 4th fought the NINE TAILS he was standing on top of a TOAD.
ALSO, the fact that Naruto showed up with all these TOADS is simply AMAZING and should be a representation of how strong he has become. Remember that the Toads come into this realm by being summoned by the contract owner and the amount of Toads and their sizes vary on the contract owner's chakra used for the summon. So in other words, the first screen should've been one of those OMGWTF times to see how strong Naruto came back
Lol, come on guy, the scroll on his back cannot JUST be a summoning contract. What would be the purpose of that? There has to be some underlying purpose of the scroll than just to be a summoning contract that you carry around. Also, he wouldn't need to carry it around just to be able to summon the toads.
Also, it obviously had to be only Ma Toad that summoned all of them there. Remember that she is quite strong, and also she is a Toad so it might not even require much energy from her at all. Also, remember that she said (not exact words), "we need to summon something big," meaning all of those characters that was a result of it. To me it's impossible to think that Ma Toad summoned Pa Toad and Naruto and then Naruto in that same instant summoned the three large toads along with the one he is standing on. That's not to say he couldn't summon those Toads, I just don't think did it this time around.