I'm pretty sure the person in the santa hat in the last panel is Aya, though I'm not certain so I won't tag her until the translations.

I think you're right. Her hat says "Bunbunmaru".

It is. An interesting present she's giving them.

Tsumanne said:

It is. An interesting present she's giving them.

Well the Dog Deck is pretty much a starter deck. They probably got a Crow Deck too for another starter deck option