Baek Ah Yeon is sorry to her heart in another set of comeback images for her 4th mini album, 'Dear Me'. 

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In a snippet of her comeback title track lyrics, Baek Ah Yeon shares, "It's not even worth it, it'll be a waste. I'm sorry," hinting at the heavy mood of her emotional song "Sorry, Heart". 

The solo artist's new winter mini album is set for release this November 21 at 6 PM KST.