Olivia Hye (also known as Go Won & Olivia Hye) is the twelfth single album from South Korean girl groupLoona's pre-debut project. It was released digitally on the March 30, 2018, through Blockberry Creative and Vlending Co. LTD[1] and was released physically on April 2, 2018, through Windmill Entertainment.[2] The single formally introduces the twelfth and final member of Loona, Hyeju (formerly Olivia Hye) and thus marks the end of the pre-debut solo single concept. The single contains two tracks, HyeJu's solo "Egoist" featuring JinSoul and a duet with Go Won titled "Rosy" which also features Heejin.
