Yuiko Kurugaya is a prominent character in the anime series Little Busters! She is known for her intelligence, maturity, and sharp wit, often acting as an older sister figure to the other members of the Little Busters group. Her skills in academics and sports are exceptional, making her stand out among her peers. Despite her aloof demeanor, Yuiko has a caring heart and often provides emotional support to her friends. Throughout the series, her character development reveals her vulnerabilities and desires for genuine connections, adding depth to her role in the story.