Can someone help me find this manga?

Many years ago I read a manga but I can't find it anywhere.
It's about a high school with a hierarchy controlled but a card deck, Jack Queen and King rule the school and the higher the number the higher your position, but the Joker is everyone's bullying target. I remember the protagonist getting a number card but after seeing the girl who got the joker card being bullied he switches with her. The teachers are unaware or turns a blind eye to the situation.
It's a pretty violent one, it's not Caste Heaven, I don't remember any couples or it being Yaoi but it's a possibility.
If you know any manga that fits that description please tell me!