Come to think of it, Mommy. Our house has no chimney, right?

Why are you so anxious?

Santa-san enters houses through chimneys. That's what I saw in a picture book in pre-school!

If we don't have a chimney, Santa-san can't enter our house!

I see.

What should I do about this...

These days, houses usually don't have chimneys, right? Santa-san enters these houses through the windows instead.

Co-...! Cold!! Why did you open the windows!? It's still the middle of winter!

Santa-san can still enter our house even if the window is closed, so it's okay!

Eh!? How will he do that!?

W-Well, that...!

But then, if the window is shut, Santa-san won't be able to enter our house!

Merry Christmas!