In a world where emotions can be harvested and traded, you play as the 'Heart Merchant', a cynical yet charming figure navigating a bustling city filled with black-market organ dealers and heartless aristocrats. After discovering that a powerful noble has stolen a piece of your emotional core, you must dive into the hearts and minds of various characters to uncover the truth, reclaim what is yours, and confront your past. Each choice you make determines the emotional landscapes you explore, as you unravel hidden connections, alliances, and betrayals. The gameplay features an intricate branching narrative structure where every interaction shapes your identity, culminating in multiple possible endings that challenge the very essence of human emotion.