Broa in the dried deserts originally was the shelter city constructed by the refugees who moved to south during Noirdwasil battle that occurred by monsters of Mui Clan.

Since the southern area is almost composed of deserts, it is really hard to survive, but cities were formed onto the southernmost high lands of Broa. However, bad situations and poor ecomony brought the poverty and chaos to early Broa, and Nedved and Tristan, who grew up in these situations, left home and started the adventures. They came back and became strong men, and they put effort to reconstruct Broa that was still poor.

They, who held the union of merchants, established Broa newly and tried to make Broa powerful as much as DeFugel and Craxion. At the moment, Arian Road, which is a barrier between DeFugel and Craxion, was blocked and all the trade was totally stopped, and Broa took the opportunity. By taking the advantage of tri-trade that trades agricultural product from DeFugel and magical products from Craxion, Broa established the foundation of the nation and trained Desert Cavalry.

With their motto, reasonablility and economy, they featured the special style of architecture and the huge canal, and desert cities were constructed in the middle of oasises and port facilities.

For Broa's soldiers, fighting skills were important, but the first required skill was surviving from the wild. So, adapting to circumstances and leading lives from crisis of death had been developed as their own skills. And they use hit-and-run strategy that put importance to not heavy equipments but mobility so that they were trained by giving up a bit of defence ability and putting more efforts on mobility.