...ah.

We rushed over here, but,

The situation hasn't changed at all...

And as always, we can't take anything from here outside.

The sky we can see from inside is clearly abnormal.

There's no doubt this room has some kind of mechanism.

But unless we figure out how it works, we're stuck...

This notebook is our only clue for solving the mystery,

But it doesn’t give us any hints.

Why would the owner of this house leave behind a notebook like this?

For what purpose......