He asked the little boy, "Tell me, why does it snow in the sky?"
He smiled sweetly, "Rain is the tears shed by the dead who are worried about them and can't bear to leave. Snow... Maybe it's the dead people crying when they see the people they miss in their hearts. His heart is broken, hurt, and cold, so the rain turns into ice and snow..."
It wasn't until one day when he desperately tore off his wings and fell into the mortal world that he realized that snow was the scattered feathers on angel wings...