Board Thread:Theories and Speculation/@comment-2165692-20170426120148/@comment-734582-20170426142339

BerserkerPhantom wrote: It was. By Jiraiya. Jiraiya's explanation tells us nothing about how the hell Kakashi came across ninja dogs (which we see nowhere else, and Kiba has a regular dog), how Sasuke came across his hawk, or how Danzo summoned some weird elephant hybrid that was apparently also a real animal.

Jiraiya's explanation only covers the most basic aspect of summoning. it tells us nothing about how someone comes to acquire such a contract, whether such a contract can be enforced unilaterally, what happens when you summon without a contract (Boruto didn't even weave the signs or used blood the first try), and what the contract exactly does for summoning (IE is it possible to summon something by guessing what the contract looks like?). It also doesn't explain where some summon animals come from (because the Shinobi world would have to be significantly bigger than what we know to have all these exotic otherwise-never-seen animals)

BerserkerPhantom wrote: We don't see him to a contract, and he was attempting to summon a small toad, not a snake. Boruto mentions in the closet that he sees scrolls and is intending to use a summon. He could've screwed up the contract part.

BerserkerPhantom wrote: Which creates the argument of "Oh, Boruto didn't actually summon this". Except it fairly clearly originates from Boruto's summon circle. BerserkerPhantom wrote: And the argument is reinforced by Konahamaru saying that there's no way Boruto could summon a creature of such size with his chakra. Even more so, when you consider that Naruto could only Summon Gamabunta, a creature about the size of that snake, with Kurama's chakra, and even then after a month's worth of training. Gamabunta is considerably bigger than that chimera. Especially since the tail/snake makes it look considerably bigger. There was also a purple glow which isn't natural for a Summon either, and it appears to me like some sort of seal was broken. So i think Boruto simply created an access point to some space-time prison or whatever that he shouldn't have, and the beast unleashed itself.