Biography
이달의 소녀 1/3
Real name: 이달의 소녀 1/3
Effective period / Period of releases: 2017
Members: Hyunjin, Vivi (24), Haseul, Heejin, Yeojin
First sub-unit of 이달의 소녀.They debuted on March 13, 2017.
Members : HaSeul (하슬) (Leader), HeeJin (희진), HyunJin (현진), ViVi (비비)