Haruka is a vibrant and impulsive girl who always smile, exudes boundless energy and operates purely on her emotions. Yet, her unfailing optimism contrasts with her extreme naivety and susceptibility to obvious pitfalls, which often lead her into embarrassing situations, only realizing after the fact. Her lack of intelligence, common sense, and self-awareness is apparent. Nevertheless, her unwavering care for friends compels her to endure any challenge for their protection.