Billlie's Siyoon has tested positive for COVID-19.

On February 22 KST, Mystic Story released an official statement regarding Billlie member Siyoon's positive test results for COVID-19.

Below is Mystic Story's official statement:

"Hello, this is Mystic Story.

On the morning of February 22 KST, Billlie member Siyoon tested positive for COVID-19.

Earlier on February 21 KST, Siyoon underwent a self-diagnosis kit test and tested positive, and quickly underwent a PCR test. Then, on the morning of February 22 KST, she received positive test results.

Siyoon has already completed her 2nd dose of vaccination, and is not experiencing abnormal symptoms at this time. She is currently receiving treatment while in quarantine, according to the health authorities' guidelines.

We will make efforts toward Siyoon's treatment and quick recovery. We will comply with quarantine guidelines, and will continue to do our best to ensure the health and safety of our artists. We apologize for causing concern to many people.

Thank you."

As a result, Billlie's upcoming comeback showcase, originally scheduled to take place on February 23 KST, has been cancelled.

Meanwhile, Billlie will be releasing their new album 'the collective soul and unconscious: chapter one' through various music platforms on February 23 at 6PM KST.