LOONA (이달의 소녀; stylized as LOOΠΔ) is an upcoming twelve-member girl group under BlockBerryCreative. Starting in October 2016, a member will be introduced with a solo single and MV release every month for a year. Their debut is revealed to be in 2018.
On September 25, 2016 the first teaser of member HeeJin was released across multiple social media platforms including Youtube, Instagram, Facebook, and Twitter. Teasers for "HeeJin" were released until October 4, when the music video for "ViViD" was released.