a little wrong mate the japanese/asian is totally in english signs game menu talking, which is why alot of english and americans had already brought an import copy before atlas brought their copy out.
they changed some text that had slighty wrong grammar, a few voice changes (i think), but that was all.
i'm not sure that if you buy the american copy you will be able to join the asian servers.
and last thing demon's soul is nothing like ff games totally different style of rpg mate