Kotone Ai (琴音あい) is a Japanese idol, a member of NECOPLA pixx., and a former member of Jewel☆Neige, Honey Squash, and ALLOVER's Teamγ as Tokoi Yuki (常井侑紀).
She debuted as a member of Honey Squash in August 2012, later joining ALLOVER in March 2013.
She graduated from ALLOVER on May 22, 2014 and from Honey Squash in March 2015.
She then joined Jewel☆Neige in May 2016 and left on January 16, 2017.
