Emotional Heart

In the world of Heart Abyss, emotion is the only hard currency. Laughter, tears, love, and despair are all priced, collected, and refined, becoming the fuel that drives civilization. Refuse to produce emotions? You will be cut off from survival rations. Emotionally exhausted? You will suffer from "dust disease" and turn to gravel in your waking life. The world is devouring your heart, but there is a group of people determined to crush its teeth with their remaining heartbeats.