Full title: The remake of the old book, after the dumbass author wrote the setting into a corner and couldn't fix it. A Sunless Sea fanfic.
Two centuries after the Human Federation fell apart, Europa, once on the frontier of the old colonies, is a world where people beneath the ice have long forgotten their former glory. They eke out a miserable existence under the protection of the old order, waiting for the end.
In this environment, Jing Yuan, an assistant who once served aboard the Typhon II-class submarine 545 and made a name for himself in the Deep Zone, met the girl who was destined for him after he retired. Her silver-gray eyes drooped, lost in the haze, as she stared at him with a dazed, numb gaze...
From that moment on, he, who had decided to escape the abyss, chose to accept the commission: to be her assistant, to be her captain, until the bottom of the abyss, until their journey reached its end.