Billlie (빌리) is a 7 member girl group under Mystic Story a subsidiary of SM Entertainment (home to LUCY, ARrC, Brown Eyed Girls, Eddy Kim, Jeong Jinwoo, Daybreak, Yoon Jong-Shin, and more). Members include former YG Entertainment trainee Moon Sua (문수아) (sister to the late Moonbin of ASTRO), Suhyeon (수현), Haram (하람), former member of Japanese girl group MAGICOUR Tsuki (츠키), Sheon (션) of Girls Planet 999, Siyoon (시윤), and Haruna (하루나).