Maria Hase is a first-year high school student at Satogahama High School and a member of the girls' baseball club in Hachigatsu no Cinderella Nine. She has short blue hair and blue eyes, stands 160 centimeters tall, weighs 49 kilograms, and has a birthday on September 23 under the zodiac sign Libra. Her blood type is A. Maria is a literary girl who became inspired by the protagonist of a story she admired, leading her to jump into the world of baseball despite having no prior experience in the sport. She is quiet and reserved by nature, often keeping to herself and not openly expressing her feelings. However, she possesses a strong sense of responsibility and a determined work ethic, which she channels into her training and study of the game. She is analytical and strategic, frequently taking notes and analyzing opponents during practice and matches, which makes her valuable for team planning. Her calm and kind-hearted demeanor makes her a reliable presence among her teammates. Her primary motivation is to improve herself and contribute to the team, drawing inspiration from the narratives she loves. Throughout the story, she develops her baseball skills through diligent effort, and her dedication inspires her fellow club members to push their own limits. Maria's notable abilities include her quick grasp of tactics, her ability to maintain composure under pressure, and her steady athletic progress. She maintains close relationships with her teammates, particularly those who share her love of literature or who encourage her growth as a player, though she often expresses her support through actions rather than words. Her character arc involves balancing her introspective nature with the demands of a team sport, gradually becoming more confident in her role.