Billlie is set to drop its second EP “the collective soul and unconscious: chapter one” on Feb. 23, the girl group’s agency Mystic Story said Friday.

The agency posted a teaser photo on the group’s social media accounts that is a collage of the members and includes phrases like “strange world,” “unconscious” and “dreamland.”

Billlie last released a single “Snowy Night” in December.

Billlie debuted in November last year with the EP “the Billage of perception: chapter one.”

The group is Mystic Story’s first girl group. It represents other artists like Yoon Jong-shin, Cho Jung-chi, Jeong Jin-woon of 2AM, Eddy Kim and Jung-in.

The group started off with six members, but after Mnet’s music survival program “Girls Planet 999” (2021) ended, member Sheon joined the group. Billlie is comprised of Siyoon, Tsuki, Sheon, Suhyeon, Haram, Moon Sua and Haruna. The name of the group represents that “anyone can have an inner ego to express their B-side.”

BY SHIN MIN-HEE [shin.minhee@joongang.co.kr]