Behind Closed Door

When you don't realise who the real demon is.

Don't open the door. Don't you ever try to open it. It's already safe here. It's a beautiful place. Many kind heart lives here. Don't you dare to open the door. Even only a small peek, don't!

No! Stop!

Don't open the door!
It's been closed for thousand years!

The demons!
There are demons behind that door

Then, you talk with a pity stare at me

"But, how to take out the demon if we don't open the door?"