Please help

I need help to find this manga, I read it a long time ago, so I don't remember much, didn't even finish it and want to retake it. What I remember is that it was based on a school where they had like a hierarchy system that consisted in every month or so some cards would be hidden in the school and based on the cards "level" the person would have a certain status at the school, other thong that I remember is that the one at the top of the status lost "everything " because his friends or something betrayed him. Plizz help I really want to read it again ╥﹏╥