User blog comment:Xilinoc/Ch. 553 - Frozen Cross/@comment-2211792-20131016143500/@comment-20912726-20131018141206

@Sternritter M. Since Komamura was brought up here, I think we will see a really giant captain coming from the forest. I know this may sound ridiculous, but remember that Komamura's "grandpa" is one giant beast, and how zanpakutos reflect their owners (Oetsu said that). So I think that the Komamuras' family secret is being a giant beast. For me that is plausible.