Board Thread:Theories and Speculation/@comment-5085906-20170828155622/@comment-30323490-20170828164608

It's a long shot in both scenarios considering the fact that Momoshiki only ever mentioned Kaguya among the Otsutsuki who arrived on earth. Jashin was only an idea brought up in order to build Hidan's character. It's very unlikely that he will ever be mentioned again, and especially unlikely for him to play a big role in the story.