So the shop doesn't have things like manju or yokan, huh?

It's because those Japanese sweets will go bad.

And things like mochi and dango won't?

Now that you mention it, you're right.

We aren't the ones who make the mochi.

We buy these long-shelf-life mochis from Eientei.

Huh, from Eientei...

Could it be that they had their genes tampered with...?

From what I heard, they make them in a germ-free room.