In a world ruled by machines, one human stumbles upon a mysterious man whose presence foreshadows an apocalypse. Sci-fi meets danmei (Boys' Love) in this brand-new story by Arise Zhang, also known as Fei Tian Ye Xiang (非天夜翔)--author of Legend of Exorcism and Dinghai Fusheng Records!

In the fractured world of the Astrolabe, where humans are but shadows of their former selves, the City of Steel is ruled by androids and their man-made deity, Father. Humanity lives on the brink of annihilation, and A-Ka, a young slave shackled by oppression, clings to a fragile hope of escaping to a legendary land across the sea.

When A-Ka crosses paths with Heishi, a mysterious raven-haired man awakened after thousands of years, his life is upended. Bound by destiny and an unspoken connection, the two become unlikely allies as they're swept into a cataclysmic war between clones and androids. As ancient prophecies unravel, the fragile bond between A-Ka and Heishi may hold the key to salvation--or doom.