Before the star fell, the kingdom was unified. Elves and humans lived, loved, and built together. The Shattering changed everything.
The Lore: When the land split, families were torn apart. Today, the half-elves of Adenor are called the "Bridge-Born." They are treated with intense paranoia. In the North, the Jarls view them as potential spies for Oakhaven's High Court. In the South, the elven purists view them as diluted bloodlines sympathetic to the grim Jarls.
The Impact: The Bridge-Born have naturally gravitated to Duskborder and Stormwatch Bay because it’s the only place they aren't viewed as traitors. This gives your players an immediate cultural group to interact with who desperately want the Crown reforged just so they can have a home again.