Billlie

Billlie (빌리) is a seven-member South Korean girl group under MYSTIC STORY, featuring members Moon Sua, Suhyeon, Haram, Tsuki, Siyoon, Haruna, and Sheon, who joined shortly after their debut. Debuting on November 10, 2021, with the EP The Billage of Perception: Chapter One and the title track "Ring X Ring," the group is known for their unique, theatrical music and a complex, interconnected storyline known as "Billlie Love" lore. Initially recognized for their strong performance skills, particularly Tsuki's viral "GingaMingaYo" fancam, the group has established a reputation for "mysterious yet captivating" concepts. Previously known as "Mystic Rookies," the members come from diverse backgrounds—including former SM and YG trainees and contestants from Girls Planet 999—and have gained attention for their vocal, rap, and dance prowess.