Byul, who will be coming back after 2 years released her teaser video.

In the short teaser video released on Monday, Byul's expressive vocals blend well with the sound of full string sound. The teaser video also show that Byul will be appearing in her music video, increasing the excitement of anticipating viewers.

Byul's new song "No More Us" is her first song being released after 2 years, as she has been focused on raising her child. She showed her desire to bring better music for her fans who waited a long time for her.

The song will be released on Wednesday.