@@stanloona6181 Yes, she didn't say how or when she injured it, but said that she couldn't perform her best. You wouldn't be able to notice at the concerts because she performs amazingly.
Also, it's her right shoulder I think, this video is flipped from the original vlive. I was confused at first. This video is showing the left shoulder but on her past two unit vlives it's her right shoulder that's taped. Recover quickly Haseul 💗