Iridescence

Justin and Janessa live an easy, contented life in a city that took to the sky - a floating refuge from whatever the world became below. But the fog keeps rolling in, and lately, so do the butterflies: uncanny, metallic-blue, appearing at the edges of perception like a memory nobody asked for. When grief cracks something open in their quiet, ordered existence, the impossible starts drifting in - beautiful, unsettling, and impossible to ignore.
Iridescence is a literary science fiction novel about love, loss, and the strange, luminous things that surface when we stop looking away. For readers of J. G. Ballard and Christopher Priest.