In a dystopian future where people's emotions are controlled through their heartbeats, you play as a heart-switching technician tasked with managing the heartbeats of various citizens. As you navigate this complex world, you must choose whose heart to implant into whom, reacting to their emotional states and ethical dilemmas. Players will engage in dialogue trees, moral choices, and narrative twists that reveal deep secrets tied to each character's past, ultimately leading to a high-stakes climax that questions the very essence of identity and love.