It seems that Eientei is selling face masks.

Go buy one.

True, it is a face mask, but!!? The loan word "mask" in Japanese usually refers to the surgical-style masks worn when one's sick.

...they were selling a whole bunch out front...

Ummm... well...

I just had to buy this one...

and she said, "These will offer total protection"...

Good day!

Oh, the girl from Hakugyokuro.

I've got in the item you ordered.

It's an outside world snack covered in a mysterious powder.

Once you start eating it, you won't stop.

Ooh, Yuyuko-sama will be delighted.

Thank you very-...

...much...

Oh, that? It's a rare thing.

What could it be, hm?