Yoomin (유민) is a South Korean singer under Cre.ker Entertainment. She is a member of the girl group Melody Day. She was added as the fourth member of the group in October 2014.
In 2017, she and fellow members Yeoeun and Chahee, participated in KBS 2TV’s idol rebooting show The Unit, and finished in 31st place.
Source: kpop wiki