Kaori Shima (嶋歌織, born March 11, 1972), know by her stage name, UA, which is Swahili for both "flower" and "kill", is a Japanese singer and occasional actress. Born and raised in Suita, Osaka, Japan, she worked as a lounge singer in her hometown after graduating from Saga University of Arts. She was scouted at her workplace by producer 藤原ヒロシ. In 1995, she debuted with the Fujiwara-produced "Horizon" under the Victor Entertainment sub-label, Speedstar Records.

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