Asterisks

Asterisks, are key items and a core feature to the Bravely Default series. They allow their user to unlock classes in a similar vein to Final Fantasy V's job system. To acquire them, the player needs to fight against bosses who possess Asterisk. Defeating them would grant the player access to the boss corresponding class. The classes linked to the Asterisks are either identical to the ones in the Final Fantasy series or similar to them, with each of them being either physical, magical or mixed classes.

Overview
In Bravely Default, the ancient Sage Yulyana is said to be the original creator of the Asterisks and made them in order to circumvent the Crystal Orthodoxy's monopoly on the classes certification at the time. Yulyana also explains that the Asterisks contains the memories of their original possessor, allowing their next users from gaining the abilities learned by those before them.