User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-1011548-20110714075631/@comment-3150696-20110714094057

The only reason I can think of about the Aoashira question is...that the D. Island and the Mountain stream were once one, whole Island. And a large population of Aoashira thrived there. And maybe a great earthquake separated the Island into two, including the Aoashira from each other.