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Having made her club debut at the age of 16, the name AZU has the meaning of "I'm going to convey my feelings to you (U), with every word from A to Z".

Her popularity has been boosted by collaborating and being involved with rapper Seamo. Her voice was featured in the chorus to "mata aimashou" and "DRIVE". She was also more prominently featured in the song "kokoro no koe featuring AZU".