So in the more recent chapters of the manga it is revealed that Deku and All Might have never really used One For All 100% at all! The only times they have used 100% is when All Might fought All For One & when Deku fought Overhaul in his 'Infinite' cowl, every other time it has only been 20%, except All Might pushed up to 50% when he fought that Nomu at the USJ & Deku did the same with his supposed 1,000,000% smash!!! But Deku got lucky that Eri was there and All Might used everything he had which is a real shame, now then once you've gotten over that, let's move onto those 'ghosts' of the previous One For All holders that Deku sees at the U.A. sports festival, they're in the picture below, i mean WTF?!?!, now this gets me curious of if One For All is just a Quirk or if there's more to it than that, i mean we know All Might said it's a Power Stockpiling Quirk, but who told him that, and who's to say All For One just lied to his brother about what he gave him... i'm really curious where All For One got that power... so what do you guys think?