Gu Sera summary: Gu Sera, Goo Se Ra, at manhwawebsiteThe number one school in the country, Kangsan High School, Goo Se Ra, has a crush on Lee Seo Jun, who comes to Kangsan High School for teaching. She experiences all sorts of hardships with problem students. In order to protect her crush, Goo Se Ra decides to turn the worst problem school into a model school.Maybe you like !