Predominantly elven, specifically Sasoyan Elves. There are a few other races that have settled but generally do not integrate well into society. Lizardmen are attacked on sight.
Constitutional Monarchy - The Islands under the AIS have their own individual Lords (Also known as daimyo), and the AIS, as a whole, is ruled by a single Emperor/Empress. The Lords answer to this Emperor/Empress.
Ora Anishi's soil and land size lends itself well to farming wheat which grows in full stalks. A portion of the island is dedicated both to rice and fish farming as well.