Hall Mountain Island was located one thousand eight hundred kilometers to the west of Blue Moon Island. Although it was part of the latter's territory, but people rarely went there.
There was a clan of primitive aboriginals residing on that island who called themselves the Hall Clan.
In the boundless Origin World, apart from the natives, there were also many clans of aboriginals of the human race. They had preserved their several tens of thousands of years of tradition, from never leaving their territories to drinking raw blood and worshiping bonfires as god of fire. The had been one thousand and eighty-six aboriginal clans long ago, but after passing through the long river of time, most were on the verge of extinction, with only two or three of their members remaining.
There were roughly around two hundred aboriginal clans who were still able to preserve their status as a clan.