, known mononymously as Ai (, stylized as AI or A.I. ) is a Japanese-American singer and songwriter. Born in Los Angeles in 1981, Ai spent her childhood in both Kagoshima, Japan and Los Angeles. She debuted as a singer in 2000, later moving to Def Jam Japan and rising to fame with her album 2004 Ai. Her single "Story" (2005) became one of the biggest singles of the 2000s in Japan, and was the sixth single in history to receive a triple million digital certification by the Recording Industry Association of Japan.