Nivritti was narrating what happened to her. And she reached the point where Kyung-Soo showed his fighting moves. She was scolding everyone as they didn't tell her about Kyung-Soo's skills. She knew that Korain and Jung-Hwa were experts in taekwondo but had no idea that other members too learned some form of martial art. That helped in their fluidity and motion while dancing.
"I thought you knew everything about us," asked Jung-Hwa, disappointed.
"Not personal details! I researched your music and your videos, not your personal details. Do you have any idea how many groups I had to research? Anyway, what was I saying, yes, he Kung-Fu-ed and everyone ran away but Jae-Geun got punched a few times. NK made me sit in the car and lock it, so I was safe.