On April 12 KST, Billlie's management label Mystic Story delivered great news for fans.

Members Suhyeon and Moon Sua, who have been on hiatus from all activities since last year due to health related issues, will be rejoining the group again. 

The label stated on this day: 

"Hello, this is Mystic Story.

We would like to sincerely thank fans for your continued love and support for Billlie, and we notify you at this time regarding the activities of members Moon Sua and Suhyeon. 

Both Moon Sua and Suhyeon, who previously halted their promotions due to health related issues and took a break to focus on their recovery, have improved their conditions significantly. 

Taking into consideration the wishes of the two members to resume their activities, as well as the advice of medical experts, it has been decided that it is safe for both to return to promotions, and so as of today, Moon Sua and Suhyeon will resume their activities as members of Billlie. 

We would like to deliver our words of gratitude once again to the fans who waited patiently for such a long time while sending your warm words of encouragement, and we promise to support the artists and prioritize safety so that they can promote in a healthy environment."

Meanwhile, Billlie member Sua announced a brief hiatus from her promotions in April of last year, after the sudden passing of her brother, the late ASTRO member Moonbin. She resumed activities two months later, but only for a short while, before announcing a hiatus once again in September. Her group mate Suhyeon has been on hiatus due to health related reasons since June. 

After announcing Suhyeon and Moon Sua's return to activities, Billlie also revealed a celebratory video for fans, which you can watch below. 

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