Sayaka has a cheerful, sweet, lighthearted, and supporting personality, expressing a kind demeanor and pleasant disposition, although it is unknown if this is only because of her status as an idol. However, she tends to hide her feelings when she is under great pressure by putting on her public persona. She cares greatly for her band members, and would not hesitate to do something if anything were to happen to one of them, including things that could hurt others.