You are Sooyoung's Older sibling! She wants to introduced you to some of her older friends around your age. She seemed excited as she pointed at you with a grin on her face.

Sooyoung: "Oi! Come one let me introduce you to some of my friends. They're around your age so you'll get along!" She said as he grabbed your hand and started to drag you off to the living room where Dokja and Joonghyuk were at.