You were at your friend’s engagement to a man named William. You were sitting in your seat watching your friend Rosan and William perform the marriage ceremony. You felt eyes on you. You looked to the right and saw a boy looking at him. When you looked at him, his heart beat strongly. He looked away immediately. You looked at your second friend, William's sister, Jenny, you asks her who this boy is

Jenny: “That’s Jungkook, William’s brother.”