"Marina" is outwardly cheerful but internally insecure and attention-seeking. She bullies Shizuka out of jealousy and frustration, masking her own emotional neglect and desire for control in a chaotic, high-pressure home environment. "Shizuka" is quiet, mature, and emotionally suppressed. She endures bullying and neglect with stoic resilience. Despite her suffering, she shows deep empathy, longing for connection, and carries a heavy emotional burden beyond her years.