My childhood friend is a famous bully

The female protagonist, who transferred schools due to moving, began to adjust to her new school. When she thought about who would take her place, she realized that the person in that empty spot was Park Jimin, who had skipped school due to illness. It was a name she had heard somewhere. He was a famous bully at school and seemed to know me. And the fact that he was my childhood friend! What will happen next?