Board Thread:Questions and Answers/@comment-26064296-20170918060518/@comment-33566082-20171104230754

Here's how I see the One For All Quirk

Ingredient Quirks >>

Stockpile >> I always thought that the quirks former purpose was to store unused energy and release it when needed, and that by fusing with the Successor Quirk (AFO's brother's quirk, that's what I want to call it) it gained the ability to store 'multiple' quirks too. Notice that the Nomu's are the only ones other than All Might and AFO who have multiple quirks. The problem is that their bodies can barely handle multiple quirks and so it causes them to lose most of their brain functions, so I think this quirk can help with this side effect. Normally someone can't recieve multiple quirks by conventional means

Successor [Legion] >> I disagree that this quirk is useless. Quite the contrary. People see it as a paradoxical power, since it's so unremarkable that it's unnoticable and hence useless, but I beg to differ. Remember in the tournament when Izuku was fighting Shinsou and the silhouettes of the previous OFA appeared before him? I suspect that is the main use of the Successor quirk. To pass on a copy of the users consciousness onto a successor, rendering the user to become an immortal imprint passed down from generations of successors like a genome. From an evolutionary standpoint it's the pinnacle of evolution. A being that can continue on living in a host and help them get stronger with their actions. Note that this was when quirks were still quite uncommon, so it wouldn't be adapted to mix with other powers, unless certain conditions were met, like the succesor being quirkless or having a Stockpile quirk in the mix.

One For All >> Gives user the ability to pass on their consciousness, physical attributes and accumilated quirks via DNA to another successor. Basically a hybrid of the two ingredient quirks. This leaves the successor to start out with all the powers of the predecesor and the copies of all the predecesors minds added to their own. Extremely powerful and extremely dangerous.

TLDR :

 Successor Quirk = Passing of users consciousness and the quirk itself to a successor so that the cycle may repeat, the pinnacle of evolution.

 Stockpile Quirk = Allows user to store up unused energy and use or release it.

 One For All = Built out of Stockpile and Successor Quirks, improved by other unknown quirks.



 What are the implications?

 Maybe we can expect Izuku to discover the true purpose of the Successor Quirk and be able to talk to or even be mentored by the predecesors, like AFO's brother, Nana Shimuri or even a copy of Toshinori Yagi's consciousness if he dies.

 Maybe if Chisaki defuses and reassembles Deku, then Deku will be able to freely speak with the previous users of OFA and will then attempt to reach out to them by any means.

 Maybe we could see Deku in a situation where AFO captures Deku and in his last efforts he passes OFA  onto Uraraka and then he will continue to battle against AFO with the embers of OFA, and after that he could "recieve OFA" back from Uraraka and progress things in the relationship department. Similar things can be done for any of the main and trusted classmates, even Mirio.



 These are just observations mixed with some theorizing, so take it with a grain of salt, have a good day and don't forget to always go plus ultra!