unstoppable force paradox (mha x opm!reader)

"What does power cost?" Y/N is quirkless. In a world of superhumans, that's not a good thing. She decides to become strong! After a few years of training (100 sit-ups, 100 push-ups, 100 squats, and a 10 kilometer run every day), she kind of wishes she never had. warnings: canon typical violence, some cursing, past sui...