Kōsaka Aika is a fictional character from the multimedia project Love Live! School Idol Festival ALL STARS. She is a member of the school idol group Nijigasaki High School Idol Club, which is known for its diverse and vibrant characters. Aika is characterized by her cheerful personality and passion for music, making her a beloved figure among fans. In the series, Aika is depicted as a first-year student at Nijigasaki High School. She aspires to become a successful school idol and often encourages her friends to pursue their dreams. Her storylines often focus on themes of friendship, perseverance, and the joy of performing.