Nightmares children

It was a normal day for nightmare, spreading negativity to every au. But what happens When the hears the sobs of children? He can't help but feel a little connection to them

Ages:
Dust:6
Error:2
Horror:1
Killer:10
Nightmare:250

Where they all are currently living

Dust and error- dust ran away from home and was living in an alleyway covered in trash bins perfect for hiding. A few days later he found error in a trash bag while looking for food, he decided to raise error as his younger brother and continue his life.

Killer and horror- Killer had been abandoned from his parents and was now living on the streets. After a while of walking to find a spot to stay he finds a bleeding skeleton on the road with a crack in his skull. It's a miracle the little skeleton survived and killer was going to raise him all by himself.

Nightmare: This negative guardian lives in his goopy castle. He is very lonely and sometimes wishes for company.

Characters in this book:
Dream
Blue
Ink
Error
Dust
Killer
Horror
Nightmare