School Wars: Zenkan Pack Honpen & Sotsugyou Sensen

For those who are not familiar with this series, the main character is Shiori Ichijo - a pretty and hard working girl who attends the local royal industrial high school with financial assistance, to try her best to survive the school life as the students here are either business elites or Mafia; while it is always tough for a poor girl in a royal school where everyone wants is either taking advantage or bullying her. However, Shiori has won the discipline committee chairman position via dedicated working and excellent performance.