Spoiler Warning! Contains clips from the episode and references to the ending.
I guess cupcakes do have cream filling.
Last Three Episode Summaries in Album 65, “Cross-Check” Available for Pre-order
Album 65 Official Description, Three Episode Summaries, Rydell Saga Tidbit (plus commentary)
Sources: Amazon.com, Luke from Odysseynerds, May 2018 Clubhouse Magazine