Cathery is a quiet, shy, and reserved girl who runs the school library. Her gentle and passive demeanor makes her appear almost invisible to most students. She rarely raises her voice and struggles to assert herself, especially when others are noisy or disruptive. Years of being ignored and belittled by her parents—who constantly compared her to her more successful siblings—have left her deeply insecure and burdened with an inferiority complex. She avoids eye contact, gets nervous easily when spoken to, and prefers to stay unnoticed.