Great Tankery Operation is starting to release this year's GuP Christmas outfit lineup. It looks like they are trying to get more of the cast in Christmas swimsuits!

While not an exact match, Kamishima Kanon sort of predicted this thing (post #4306262), as he noted himself on Twitter.

Kamishima Kanon (twitter #1465246266565140492):

I drew a prediction of Christmas Erika last year, but I never thought that she would come out in a black Santa costume.