Sandwich Girl Manga

Sandwich Girl summary:

Lee Jaekyung, a violent girl, just wants to live a peaceful and normal high school life. She goes to the same high school that her crush, Yu Minwoo attends, and even learned to sew and cook just for him. She finally sees him again when he gives his student body president speech, but she also finds out that the annoying playboy Sejoon Kang, is also at her school. How does Jaekyung know Sejoon? What will happen next?