Aster was found as a baby by a troupe of traveling performers. The troupe tried to find the infant's real family, or at least provide her with one, but they ended up naming her, and Aster kept finding ways to return to them instead of staying at a random orphanage. She grew up with a love for both performances and helping others, but was unsure what to do with her own life, since being a permanent member of the troupe didn't feel right.

One day, someone who saw half of Aster's limited number of performances sent her a letter saying how they wished adventuring had more perks like Aster's performances, so she thought, "You know what? I'm going to travel the world and become an adventurer. Let's see what this brings me."