The weapons that teach Heritor skills can only be obtained after the Heritor job is unlocked. The weapons are obtained by checking for a notice in the pub, then finding a location for a quest manually. These quests do not appear in the pub's mission list, but pop up upon reaching the right map area. After completing the mission, the player obtains the weapon for the next skill. There will not be another notice for another Heritor skill weapon until after the previous skill is mastered. This also applies to Adelaide, despite being learned without a weapon.