Go to the Arena and get a few claymores. Then, go directly south of the 
Imperial Waterfront to a place
called the Old Bridge. Move west and follow the road until you reach a ruin 
that starts with a "V". Go
inside and get past the minor creatures. You will find a girl named Umbra. 
There is one broken pillar in
the room. Use the bench next to it to jump on top of it, then stand at the 
edge. Use a ranged attack to
have her start attacking you. Then, take out the claymore and just start 
hitting her. She has a lot of health
and does a lot of damage -- do not fall off the pillar. If done correctly, 
you will have full Ebony and a
great sword without getting touched.