From October 2016 until June 2018, each member of the group was revealed along with a solo single album and a music video for the title track. The complete group debuted on August 19, 2018 after holding their debut concert, LOONAbirth. They held their first comeback with [X X].
Olivia Hye (Hangul: 올리비아 혜), born as Son Hye Joo (손혜주) is the twelfth member of the girl group LOONA.
Born on November 19, 2000, in Jung District, Incheon, South Korea, she was revealed as the twelfth member on March 17, 2018, and later officially released her solo single "Olivia Hye" with lead song "One & Only" on March 30, 2018.
|03||SBS Power FM 'Young Street' (ViVi, Choerry, Yves)||8PM|
|04||bntstar Photoshoot (HeeJin, ViVi, JinSoul, Yves, Go Won)|
|07||88rising 'Asia Rising Forever' (HaSeul, Kim Lip and Olivia Hye absent)||10AM|
|08||V-LIVE '3Jin's Art class' (HeeJin, HyunJin and YeoJin)||8PM|
|11||Fact in Star recording (YeoJin, Choerry(guests) and Yves(host))||4PM|
|14||Frequency of the Moon Ep.23 (ViVi, JinSoul and Chuu)||04:30PM|
|16||"Love Battery" (og. Hong Jinyoung) cover on Immortal Songs (LOONA minus HaSeul, Kim Lip and Olivia Hye)||6PM|
|22||V-LIVE 'We invite you to Yves' Birthday' (Yves, Go Won, Choerry)||8PM|
|Fact in Star broadcasting (YeoJin, Choerry(guests) and Yves(host))||9PM|
|23||Kim Lip's 3rd Debut Anniversary|
|Remote fansign 'Orbit Ring'||5PM|
|Oh! My Part, You (Chuu)||9PM|
|25||Fact in Star starring Ryu Sujeong (Yves MC)||5PM|
|30||yyxy's 2nd Debut Anniversary|