Board Thread:Boruto Discussions/@comment-25319479-20181020083112/@comment-6036561-20181021181629

Thekillman wrote: Kishimoto explicitly didn't want to revive Jiraiya in the 4th war. Why would he ever greenlight that idea now? Makes no sense. KK is not Jiraiya. Related, perhaps (Jiraiya traveled the world and liked "research", so there's no telling if he left any kids), but not actually  Jiraiya.

I don't think he's a child that Jiraiya left around the world, in that case he still should be recognized ad a foreigner chakra. For now, imho is most likely that he's one of Minato's teammates

People can extinguish chakra. Both Muu and Karin could completely erase their presence from Sensors. Don't see why KK couldn't do the same.

True, and KK did manage to hide himself from the old geezer he killed in his first appearance (even if I think he implied that he could hide only because the old man was not skilled enough)