nostromos on 13 August 2010
The sword is called dragon bone sword, you actually need pure white worlde tendency but you can't get it at least until your new game .
I suggest you look in the demon's souls wiki, it's very useful, also you don't need to kill ostrava in the first level you'll end up getting it eventually without killing him.
here's the link http://demonssouls.wikidot.com/
