Maria Kousaka is a main character in the visual novel and anime series Suigetsu. She is known for her gentle and reserved personality, often acting as a supportive friend to the protagonist and other characters. Maria plays a crucial role in the unfolding of the story’s emotional themes, particularly in exploring loss, hope, and the passage of time. Her presence brings a sense of warmth and empathy to the group, and her development is key to the series' resolution.