Jewelry member Ha Juyeon recently expressed her sadness in ending their promotions for "Back It Up" so quickly. On March 13th, the idol star updated her Twitter with, "Jewelry & Navi & Mighty Mouth & Soya~~ After Jewelry and Mighty Mouth's final stage performances, we wrapped it up together and took a picture." The picture sees all eight artists posing with sad faces for the camera in their stage outfits, showing their disappointment over their activities coming to an end. Juyeon also added, "The Might Mouth oppas worked really hard too. Please give more love to Soya and Navi as well." "Our stage promotions for "Back It Up" ended so soon, but it was a very happy ending to our activities. Ah~ Thank you to all our fans and I love you. Aja fighting!" Jewelry recently wrapped up their promotions for "Back It Up" on the March 13th episode of SBS's "Inkigayo". Source: Newsen via Nate