Dia is the smallest of the three largest islands in the Western Isles featured in Fire Emblem: The Binding Blade and is located on the northeastern edge of the archipelago. While it is mentioned in passing several times during the story and is given a name on the world map, little else is known about the island because no game events take place there. However, markings on the world map indicate a potentially large forest is located there, the only one of its kind in the Western Isles. Most likely this indicates that the island has been left relatively unsettled compared the rest of the Isles.