If you want to know how to get, I will tell you:
Throw away the sword of Aeons (duh) and follow through the story, eventually the Guild Master talks about it and he tells you to look at Maze's diary. Go to his quarters and look at the bookcase on the right, keep looking at it, then it will say "I failed, I am Jack's slave forever..." go to the graves right outside of his quarters and go up to each of them (because I don't remember which one it is, there are four total). I won't tell you anymore because I don't want to ruin it for you.