Board Thread:Boruto Discussions/@comment-30415965-20180416084320/@comment-33286580-20180416101046

it is speculation that Kashin Koji is Jiraiya because apparently they somewhat look similar.

Spoiler:::

it doesnt help that in latest chapter he summons a Toad.

No evidence so far that he is Jiraiya.

if they somehow do make him Jiraiya than this will be the biggest slap on Naruto franchise and fandom that Boruto series will do. the Boruto series has a love for pissing on many aspects of the original story after all.