Opera is a very passionate individual, and traveled to Planet Expel alone on hearing that her lover Ernest had gone missing there. She encountered Claude and his friends on her journey, and joined them in theirs.
At the start of Blue Sphere, it is the distress signal of Opera and Ernest that sets off the events on the planet Edifice...
// tactical_assessment
Opera is obtained as a party member late in the game which limits her usefulness. However she is the elemental queen, allowing her to exploit monster weaknesses with skills that have no cast times. By using the special field action "Enemy Analysis", Opera can learn these weaknesses and bring even the tougher monsters down. Opera also benefits from IC Machinery, being able to obtain different elemental attacks and even a party heal.
Skill Balance Graph — No one can master every skill in Blue Sphere. The graph gives a visual representation of how many skill points are in each of the four categories: Tec, Int, Btl, or Sen. Go too far in one direction and you'll find that you can no longer unlock skills in the opposite direction's category.