Mahiru Shiina has silky blond hair, caramel-colored eyes, and flawless, milky-white skin. She exudes an angelic aura but hides her true thoughts behind a mask, a result of her emotionally neglected upbringing. She is a practical and organized individual, excelling in academics and sports effortlessly. While withdrawn, she is kind-hearted and generous, always willing to help others. In private, her innocence shines through, and she displays a tendency for brutal honesty.