It was revealed that After School's Jooyeon hurt her ankle from a cart accident. On the 14th, her entertainment company informed that Jooyeon got into a cart accident at the airport while she was returning from Singapore. As a result of this accident, Jooyeon hurt her left ankle. A representative of her company stated, "It wasn't a severe injury so she just got a few stitches. Thankfully, she doesn't have any upcoming activities, so her injury won't interfere with her schedule." As a result, Jooyeon did not perform together with her After School members in the pre-recorded broadcast of Music Core this afternoon.