In 'Whose Heart Is It, Anyway?', players take on the role of an eccentric heart collector in a surreal, modern city filled with unique characters and supernatural elements. After discovering that hearts can be swapped between individuals, players must navigate through a series of bizarre scenarios and challenges to recover their own heart, which has been misplaced during a frenetic Valentine's Day festival. With each heart swap, the player's character gains new abilities and insights into the emotional lives of others, allowing them to forge unexpected alliances or provoke enemies. Decisions made will influence the player’s journey and the outcome of the story, leading to multiple endings that reflect the complexity of modern love and identity.