Yui Mizuno (水野 由結, Mizuno Yui) is a Japanese musician, singer, model, and actress. She is a former member of the kawaii metal group Babymetal and the idol group Sakura Gakuin. In October 2018, she left Babymetal due to an undisclosed illness, and will be possibly returning to the stage as a solo artist. She is managed by the Amuse, Inc. talent agency.