Board Thread:Show-Related Questions and Answers/@comment-34924658-20151116051004/@comment-26620090-20151117110151

Well,during the last episodes of 3B we saw the urn and then it was revealed that,inside that,Elsa was prisoner so the Frozen arc.

During 4A we saw Lily and the Author was mentioned various times,and in 4x11 we saw the Queens of Darkness.

And now,in 5A,the Underworld is mentioned various times and we also saw a ferryman like Charon in 5x02 :P