Okay but why did jainer try killing her?

He was probably hired by someone. I don't think he himself has any intention to kill her

Remember that one student body president who camilla exposed for bullying and had to leave the school (i forgot her name). Her dad sent an assassin group (jainer’s group) to kill her, but jainer realised how important of a figure she was and stopped. It was a couple chapters ago so i don’t remember the exact details