In a world where emotions are literal commodities, you play as a 'HeartBroker', a mercenary who specializes in trading and selling the desires and fears of others. The game begins with you receiving a mysterious heart that doesn't belong to you, leading you on an unexpected journey through a bustling city brimming with hidden emotions and powerful rival factions. As you navigate through morally complex choices, you forge alliances, manipulate feelings, and engage in riveting dialogue with heart-stealing individuals who aim to capture the market's affections. Will you keep the heart, trade it for your own desires, or uncover the truth behind its owner? Each decision shapes the narrative, leading to multiple endings and a deeper understanding of human emotions.