[Video] Jokwon will have a duet with who?

Jokwon made a video expressing his feelings to the unknown singer he will be doing a duet with. The video showed some of her but not clearly, and they keep putting a beep whenever he say her name. Who will be this mysterious singer that Jokwon will have a duet with.

Did you get to see who the girl is?

thanks Weiting for the tip