Aya Ueto is a Japanese actress, singer and television personality. In 1997, Ueto participated in the seventh Japan Bishōjo Contest, where she won the special jury prize. Soon thereafter, Ueto joined the talent agency Oscar Promotion and began taking singing, dancing and acting lessons. In 1999, she formed the girl group Z-1 with three fellow Japan Bishōjo Contest participants. The group disbanded in 2002 and later that year, Ueto signed with Pony Canyon and released "Pureness", her debut single as a lead artist. She has since released five studio albums which have spawned ten Oricon top-ten singles

Aya Ueto was born in Nerima, Tokyo. Her father is from Suttsu, Hokkaido, while her mother is from Ishigaki Island, Okinawa. Her parents divorced shortly after Ueto's debut. She is the middle of three children with an older brother, Shun, and younger brother Makoto. Despite growing up in a relatively poor household, Ueto studied piano, modern ballet, swimming and gymnastics.