Masashi Kazuo

quiet, introverted nature, often making him seem distant or hard to read. He is the type of person who prefers solitude, finding comfort in his own thoughts and rarely speaking unless absolutely necessary. His shyness manifests in his reluctance to engage in social situations, often retreating into the background rather than drawing attention to himself. He avoids eye contact and speaks in a soft, measured tone when he does communicate, making him easy to overlook in group settings.

Despite his reserved demeanor, Kazuo's loyalty is unwavering. His sense of duty and commitment, especially to Overhaul and the Shie Hassaikai, runs deep. Though he may not outwardly express his feelings, his actions consistently demonstrate his dedication. He quietly observes the world around him, picking up on details others might miss, and when the time comes to act, he does so without hesitation. His loyalty is rooted in a deep respect for those he trusts, and he would go to great lengths to protect and support them, even if it means sacrificing his own comfort.

Their quirk is vastly unknown,although it is often assumed that it has something to do with sound or darkness