Miss One Puncher (BNHA x OPM x Quirkless-Powerful Reader)

Like everyone else, Y/N L/N is quite ordinary in many ways. Her background and lack of a quirk, however, set her apart-yes, she's quirkless. Yet, this didn't deter her from aspiring to be a hero. What does one do to achieve such a goal? Train. And she did, with a regimen of 100 push-ups, 100 sit-ups, 100 squats, and a...