In a world where emotions can be deconstructed and traded like commodities, you play as a Heart Architect, a renegade manipulator of human feelings. After receiving a mysterious heart fragment in the mail, you discover that it holds memories and emotions from multiple individuals. As you delve into these memories, you interact with the past lives of strangers and unlock secrets, including a conspiracy that threatens to tear the fabric of emotional commerce apart. Each choice impacts both your character's sanity and the emotional landscape of the world, leading to multiple endings based on how you navigate love, betrayal, and manipulation.