This drops the reader right into the thick of the action without the need for a 100-page scene-setting; she assumes the reader to be astute enough to work out what's going on, in her world invaded by insectlike creatures who are covering it with their papery structures. It isn't generic Fantasy by any means, if it is at all; it's something like Iain M Banks's Against a Dark Background in having a Fantasy feel while still being SF. Its winged sociopathic drug-addicted immortal - but not invulnerable; he's terrified of drowning because if he fell in the water his wings would drag him down - is an unlikeable but memorable viewpoint character.