Corsain is an island off the shore of Alindor. The island is divided into two realms, the Dragonsong Dominion and the Driran Kingdom. Together with the realms on Tilmar, it makes up the Rohden Alliance.

Corsain is also the place where the first katana was forged, which has become the weapon of choice for most warriors from the islands. There are many skilled blacksmiths that specifically craft katana. There are even legends of a katana that is sharp enough to cut through solid rock.