Board Thread:Spoilers!/@comment-26159109-20170512061020/@comment-26159109-20170513091449

The doormouse wrote: What about the realm from Heroes & Villains?

All our three remaining cast members were in that realm, even with 'reversed' personalities.

Maybe the girl arrives at adult Henry's door one day with the black book from that story and asks him to help, as she believes she came from that realm and wants to find a way to get back. She somehow knows he is an Author and she wants him to find or create a portal.

Either way, I think we may be seeing the last of Storybook, as it will no longer exist.

Unlikely since that realm doesn't exist and the characters there were the real characters while wish realm created duplicated characters who still exist (minus the ones who aren't there like Snow, Charming, Belle, Emma and Zelena - basically the ones who are leaving the show).