G-reyish (그레이시) is a four-member girl group under Big Ocean ENM. Formed by Hyuk And Company, they debuted on June 1, 2017 with the single "Turn Back Time". At the beginning of 2021, the group transferred companies to Big Ocean ENM. Their group name was inspired by the color gray. Since gray won't lose its original color - even when mixed with other colors - the girls hope to be a group who won't lose their original color. The group doesn't have a set leader. On May 31, 2022, Big Ocean ENM announced, through their group's fancafe, that they decided to terminate their exclusive contract and all members decided to part their ways.