In a world where emotions are manifested as physical entities, you play as a Emotion Broker—a freelance mediator trading hearts to balance the emotional stability of various characters. Your goal is to help them find their unique heart, which has been misplaced or swapped, leading to chaos in their lives. As you navigate various relationships, embark on soul-searching quests, and face moral dilemmas, you help others confront their feelings while unearthing your own hidden desires. The fate of their emotions and your own heart lies in the choices you make and the hearts you gather.