Board Thread:Boruto Discussions/@comment-32586725-20170715185225/@comment-5085906-20170715201651

Nish7197 wrote: In ep 4 of Boruto:Naruto Next Gen, we see that on the roof of the Academy, Boruto uses a summoning jutsu and summons an unknown creature. Later, in the recent episodes, we get to know that it was Nue. How is this possible? In episode 14, Boruto's eye somehow transferred the Nue back into its home dimension the moment Boruto clashed with Sumire. In episode 4, Boruto tried to use the Summoning technique without a blood contract in Sumire's presence.

There is no clear explanation regarding the mechanics of the Nue's summoning, but at this point I can only deduce that Sumire's presence as the Nue's host and Boruto's on-and-off dojutsu coupled with the fact that Boruto tried to use Summoning in an incorrect manner caused the Nue to emerge, but because at that point it hadn't gathered enough chakra, then it couldn't appear in its complete form.

A more specific theory states that because Boruto's dojutsu enables a connection between him and Nue's homeworld, then smearing his blood on the scroll without a contract with another summon automatically spawned Nue.