1 - new students

Ryu Hyuna has a reputation in school. The shy president. The new students came in and changed her completely. She was bullied verbally and a bit physically by then too. She had enough and left school for over a month. People thought she ran away, or committed suicide or transferred to another school. As she came in people that she was a new pupil, as well as some teachers. SEVENTEEN got into some trouble with a gang called the "Lighte Clan" and somehow Hyuna was able to get them out with just a snap of her fingers. How can she do that?