This is Billlie. #NGCorporation Billlie (Hangul: 빌리), is a South Korean girl-group formed by Mystic Story. They debuted on November 10, 2021. The group consists of seven members: MOON SUA, SUHYEON, HARAM, TSUKI, SHEON, SIYOON, and HARUNA. Known for their unique and immersive storytelling concept, Billlie sets themselves apart in the K-pop scene by blending fantasy, mystery, and creative narratives into their music and performances. Established 2021. MYSTIC STORY © All Rights Reserved. neogroup Corporation ©