Opera is Ernest's girlfriend, and she's determined to track him down on Expel no matter what it takes. She's fiercely strong-willed—the kind of person who doesn't give up easily once she's set her mind to something.
What really sets her apart is her expertise with weapons. Opera's got serious skills when it comes to artillery and guns in particular. She knows how to handle herself in a fight, and that competence is a huge part of who she is.
The main driving force behind her character is the fact that she's lost track of Ernest and wants to find him again. It's personal for her, and fans often note that her determination to reunite with him is what pushes her forward through the story.
Content compiled by AnimeList.moe from publicly available sources.
