Four school bullies and my friend of 10 years, Choi Beom-gyu

Um... First of all, the main character is Kim Yeo-joo and the villains are Lee Yeo-woo and Park Ji-hoon. The four school bullies that appear here are Yeonjun, Soobin, Taehyun, and Huening. And it's about school life! And please be careful that there is a little bit of swearing. Well then, goodbye.