A city called Snow

A castaway was picked up from a completely white boat and brought to a completely white city. Here he came to discover the city of Snow, where everyone is called Snow and everybody and everything is so white as to appear luminous. The castaway discovered that the inhabitants only live thanks to the light that they emit and that they only have one natural enemy; Moon, who instead coexists with the darkness.
He also discovers that the neighbours of this particular city are all the fantastic creatures who have fled persecution by humans and who live there hidden by the bright light of Snow. At this point a problem arises; in fact while Sun faces the planet, instead of seeing nothing as usual, in as much as the bright light simply seems an empty place, he sees a little dark speck; a human. So Sun alerts Moon to the discovery, who approaches to verify it.
At this point the inhabitants are at risk of death and it will be their guest who will save them with the help of the fantastical creatures. This e-book is the english version of an italian bestseller