Mystic Story, house of one of our favourite groups LUCY, debuted their first girl group Billlie. This idol groups consist of the members Moon Sue, Suhyeon, Haram, Tsuki, Siyoon, and Haruna. A few of them are known for participating in Produce 101 and MIXNINE. Their first mini album titled ‘the Billage of perception: chapter one‘, is said to contain a ...