YoonA

She's beautiful, witty and everyone loves her.  She has almost everything any woman wants. She has a loving family and friends. She owns a successful modeling agency that she and her friends managed. 

 The announcement of her YuRi Unnie's engagement to her boyfriend TaeYang not only caught her off guard. It seems everything changes. From her perspective though.. Don't get her wrong. She and her two siblings, YuRi and JooHyun are close. And she thinks that they'll be together for a long time.. She just felt so overwhelmed with all the changes happening around her. And she's definitely happy for her YuRi Unnie. Plainly happy.

So, where's the emptiness inside her heart comes from?