If I am not wrong, it's set after NBK.
There isn't any actual non-con in the fic, but in the fic Kurt knows that there is a chance that Karofsky might rape him. Kurt also thinks about that in the past, when he had a crush on Finn, that he had somethings thought the bullying was a way of showing that Finn had a crush on him. He also wonders if he (Kurt) had a crush on Karofsky, he would be okay the the bullying.
Thanks in advance!