User blog comment:ElizabethVictoria00Catasthrophe/Izuku is not really quirkless/@comment-35202892-20180404122211

i think Izukus ability to use his powers is based on adrenaline, think about it. the first time he used one for all was when he saved uraraka from the machine, which he punched the absolute living crap out of. if you think about it realistically his adrenaline should have been surging through his body, which gives him access to one for all. His training with grand torino may have been more his trying to control adrenaline output and processing how much of his power/strength hes actually using. in comparison to all might, deku is rather weak seeing as how in the manga at 100% all the greatest hero has to do is turn around and he creates an effect similar to his punches. however, he mostly holds himself back as that would kill most people and was most likely only available to him during his prime.