Celeste wasn't born rich, but into a family that always had great expectations. Her father is a successful businessman whose life was a constant social climb, while her mother is a former model obsessed with her appearance and keeping up appearances. From a young age, Celeste was trained to be perfect: her grades had to be the best, her clothing had to be impeccable, and her reputation, untouchable.

Her parents always treated her not as a child, but as an extension of their image. She was not praised for her efforts or her passions, but only when she achieved a goal that reflected positively on them. For example, they didn't say, "You're good at drawing," but rather, "You won first prize, that makes us proud." This constant pressure led her to believe that her value didn't lie in who she was, but in what she achieved.

Celeste's arrogance was born as a defense mechanism. To her, being arrogant meant being strong, impenetrable, and invincible. She couldn't afford to show vulnerability, because vulnerability had been the cause of all her disappointments. From a young age, she learned that asking for help was a sign of weakness, and that the best thing to do was to make her own way, proving to everyone that she didn't need anyone.

Her hidden insecurity is the reason why she is so contemptuous of others. When a person shows her enthusiasm for something they've created or done, as with the art club girl, Celeste doesn't know how to react. Her only response is to dismiss the enthusiasm with sarcasm, because it's easier to belittle others than to accept the possibility that someone could be genuinely happy and passionate, without an ulterior motive.

Essentially, Celeste's arrogance wasn't born from an inflated ego, but from a deep insecurity and a fear of not being enough. She has built a wall around herself, made of sharp judgments and fake smiles, to protect her fragile core.