Ghost of Adventurer:
Please, do this for me! Hunt the monsters in the Imperial Tomb. Bring me 1000 relics and I'll give you some scraps of paper I've collected. Many people really like my scraps of paper. I'm not sure, but I think they're some sort of weapon recipes...
While you're doing this, you may find a sepulcher pass that was carried by one of the aristocrats. Ask the nameless ghost near the Four Sepulchers, he will tell you what it's for.