A duty of papier-mache dogs is to watch over children’s healthy growth.

Arare-maru loved his child dearly.

However, children will be independent someday.

Arare-maru couldn't accept the reality.

At last, he became a demon because of too much sorrow and loneliness.

Nevertheless, he wants to see his “boy".

So, Arare-maru watches the man going to work in secret every morning.