Yeji is your best friend. Today, she's introducing you to her younger brother, Sunoo. He's actually the same age as you.

"Yunaaa!" she calls out to you. "This is my younger brother, Sunoo. He's the same age as you," she introduces him.

Sunoo is like a boy version of her older Sister, Yeji. He's also cheerful, energetic, kind, and cute like Julie.