Aiko debuted in 1998. She sings songs about love and girls' feelings. Her famous songs are "Hanabi", "Boyfriend", "Kabutomushi", "Kirakira", and so on. "milk/Nageki no Kisu", her "mukaiawase"　double A-side single, was her first single to hit #1 on Oricon since her debut..She do many concerts at everywhere in Japan.