Run (Kaori Fukuhara), Tooru (Aoi Yuuki), Nagi (Yumi Uchiyama), Yuuko (Minako Kotobuki)

Artist

Character song name featuring the four main cast members of the TV anime A-Channel: Kaori Fukuhara as Run, Aoi Yuki as Tooru, Yumi Uchiyama as Nagi, and Minako Kotobuki as Yuko. They performed the ending theme Humming Girl as well as Start and Harukaze no Kagaku. Humming Girl is a heartwarming pop tune with lyrics by Saori Kodama and music by Satoru Kosaki, gently expressing the everyday lives of four high school girls that define the series.