One For All

One For All (ワン・フォー・オール Wan Fō Ōru?) is the transferable Quirk that is possessed by its ninth and current host, Izuku Midoriya.

In the past, it was used by its previous hosts, Nana Shimura, Toshinori Yagi, and the first six users before them.[1]

Contents

History

Description

Weaknesses

Assimilated Quirks

Gallery

Known Users and Usages

All For One's younger brother

Second User

Third User

Hikage Shinomori

Daigoro Banjo

En

Nana Shimura

Toshinori Yagi

Izuku Midoriya

Temporary User

Katsuki Bakugo

Named Super Moves

All Might's Super Moves

Izuku Midoriya's Super Moves

Trivia

References

Site Navigation

History

The origin of One For All.

Long ago, All For One, a man with a Quirk that allows him to steal other Quirks and give them away, forcibly gave his seemingly Quirkless younger brother a Quirk that allowed him to stockpile power within his body. However, unbeknownst to either one of them, the younger brother already had a Quirk with no other power than that it could be transferred to another person. The transference Quirk and the power stockpiling Quirk merged into one and from then on became One For All.[2]

The younger brother somehow discovered this. He had a strong sense of justice and he tried to defeat All For One, but given the huge difference in their strength, he failed. The younger brother decided to entrust the Quirk to future generations of Heroes, hoping that they would cultivate One For All and one day put a stop to All For One.

The fourth, fifth and sixth users passing down One For All.

All For One sought after One For All and as a result, almost all of the users of One For All fought and were killed by his hand, but not before they each had the chance to pass on the Quirk to a successor so that it could reach the future and elude the villain.[3] All For One attempted to steal One For All twice and failed both times, first from the fifth user and again from the sixth.

The seventh user, Nana Shimura, was the last holder killed by his hand, while her apprentice and heir to One For All, Toshinori Yagi, fought All For One at least twice, winning both battles. The Quirk was passed down through nine generations, growing stronger with the passage of time, though, it is unclear exactly how much stronger it gets. Currently, One For All is one of the most powerful Quirks in existence; however, it proves very difficult to fully master, and thus its full capabilities haven't been revealed yet.

All For One tried to steal One For All from Izuku after transferring his ability to steal powers, and with it, a copy of his consciousness, to Tomura Shigaraki. All For One tried to piggyback on Tomura's pure and raw hatred as the strength of will necessary to override One For All. However, it wasn't enough and All For One once again failed to claim the Quirk.

Very few knew the truth about One For All, for fear of what villains would do if they found out that the world's most powerful Quirk could be transferred. However, after the Paranormal Liberation War, it's name was leaked to the public when people overheard Endeavor mentioning it during his fight with Tomura Shigaraki. Though currently unaware of what it means, people were able to piece together that it is related to All For One due to the similar name.[4]

In the aftermath of the Paranormal Liberation War, Toshinori was confronted by Best Jeanist and Hawks about One For All and how it was connected to why Shigaraki was after Izuku during the battle. Toshinori agreed to tell them everything. Later on at a press conference, Endeavor, along with Hawks and Best Jeanist, denied knowing anything about One For All, so as to protect Toshinori and Izuku.

Description

One For All is a transferable Quirk that can be passed on from one user to the next.[1] Its name comes from its nature; being 'one' Quirk for 'all' people. In order for the Quirk to be transferred, the recipient must ingest a sample of the predecessor's DNA (ex. a strand of hair or a drop of blood).

The origin of One For All is itself a powerful will that refused to submit to All For One, because of this, the power cannot be forcibly taken. In order for the Quirk to be transferred, the current owner must freely choose to transfer it. However, it can be forcibly given, as the recipient doesn't have to agree to anything. Since One For All can't be forcibly taken, it is the only Quirk that can be used in combat against All For One, as any user of All For One would simply be able to steal any other Quirk.

One For All used to destroy a giant robot with only one punch.

One For All also allows the user to stockpile an enormous amount of raw power, allowing them to significantly enhance all of their physical abilities to a superhuman level. This results in unbelievable levels of strength, speed, agility, and durability.

The user can focus the stockpiled power into a single body part, or spread the power evenly throughout their body, although, focusing the power puts a greater strain on the part of the body where the power is focused. The user is also able to control the percentage of the power that they activate. One For All can even grant the user an exceptional strength boost to their given Quirk if they have one.

The core of One For All has grown in strength from being passed from user to user, and the Quirk Factors of all of the previous users have merged into the core, granting the current user the ability to access these Quirks. The Quirks have significantly increased in strength since they were used by their original users; this is due to the nature of One For All's core stockpiling power and increasing in strength from user to user.

Izuku feels the previous users of One For All.

In addition to the Quirk Factors merging with the core, One For All carries echoes of the consciousnesses of all of the previous users. One For All has some kind of subconscious realm where these echoes exist. It is later revealed that this is due to the fact that Quirks are engraved with the consciousnesses of their users, so any new user who receives One For All have their conscious embedded and placed into the subconscious realm.[5] It was believed that the consciousnesses can only be embedded into One For All if the user possesses a Quirk, however Toshinori proved this to be false: since he didn't have a Quirk or a Quirk Factor to have his consciousness copied into, Toshinori instead was able to actually imbue a true piece of his consciousness inside of One For All. This allows the fragment of consciousness to fully interact with the other users and share with them everything the real Toshinori knows, which is how the other vestiges were able to learn about the life shortening side-effect of One For All.[6]

Vestiges of the previous One For All users.

The subconscious realm within One For All was originally a barren landscape surrounded by darkness, and vestiges of the previous holders could only share brief visions with one another. However, after Tomura Shigaraki and All For One attempted to steal One For All, they drew the vestiges out by sheer force, stabilizing the vestiges within and allowing the current and previous users of One For All to communicate with each other freely. The realm took the form of the ruins of a conference room with chairs, one for each holder, though the second and third users chose not to sit and stood in the corner with their backs turned. After having been stabilized, the previous users can now fully interact with Izuku whenever they wish, giving him advice on their Quirks and how to best use them.[7] The realm also seems to have some connection to One For All's counterpart Quirk, All For One.[8]

One For All draws power from the cries of help of those in need, as they are like a direct order to the user.[9]

One For All also seems to alter the user's appearance in different ways. For All Might, it significantly enlarges his muscles and overall body mass to make him look like a completely different person, similar to a giant. For Izuku, usage of One For All causes the empowered part of his body to glow, with vein-like lines crossing through each other. His body also generates crackling, green energy that resembles lightning bolts when he activates One For All: Full Cowling. It is unknown what the usage appearance of One For All looked like for its previous handlers, however.

One For All can be duplicated, but since it is an accumulation-type Quirk, the amount of power given is practically insignificant; shown when Neito Monoma did not gain any substantial increase in power after copying it.

Weaknesses

Training to handle the extreme power of One For All.

When One For All is transferred, the new user's body is not naturally suited to it as they would be with a Quirk they were born with (ex. Someone who breathes fire doesn't burn their mouth while using their ability). In addition, One For All is a lot to handle; if ones' body can't handle the power, then their chassis could be blown apart. Because of this, the successor must undergo intense and rigorous physical training.[10]

After One For All is transferred, the previous user is left with only residual power of the Quirk (or "leftover embers"). While they would still be able to utilize the power to essentially the same degree as before, continuous usage of it will cause their power output to decrease, until the wielder is not able to make tangible use of the Quirk at all. After All Might's final battle against All For One, his ability to sustain his Muscular Form was reduced to seconds, rending him unable to make any use of his residual power.

Following the research conducted by All Might, as well as the discourse of the One For All vestiges, it was revealed that One For All can affect the user's lifespan. If a person who already has a Quirk receives One For All, the extra Quirk places an enormous burden on their body, depleting the user's life force and shortening their lifespan, described as adding water to an already full cup, causing it to overflow and breakdown. The rate at which the person's life decays is unknown, but Hikage, the fourth user, received One For All at the age of twenty-two and died of "old age" eighteen years later, at the age of forty. This weakness can be circumvented if an inheritor does not already have a Quirk, since the Quirkless user would be an "empty cup" that is filled by One For All.[6]

The ability to resist having One For All stolen is heavily dependent on the difference in willpower between the user and the thief: if the will of the person attempting to steal One For All is great enough, then One For All's theft immunity can be overridden.[11]

When manifesting themselves in the unconscious realm of One For All, the current user's body is not all there at first. Some parts, such as their mouth, take time to learn how to fully manifest, making it more difficult to communicate with the other vestiges.

Assimilated Quirks

The Quirk factors of each of the previous users have merged with the core of One For All and have since increased in strength due to One For All's nature of stockpiling power. Izuku is the first user capable of accessing the Quirks of the previous users. Because All For One would constantly hunt and steal the most powerful Quirks, most of the user's Quirks are rather unexceptional by themselves and do not have enough potential to be raised to the level of ultimate moves.[12][3]

The Quirks within One For All are:

Danger Sense: The Quirk wielded by the fourth user, Hikage Shinomori. This Quirk allows the user to detect nearby threats.

Blackwhip: The Quirk wielded by the fifth user, Daigoro Banjo. This Quirk allows the user to create tendrils of dark energy from their body. These tendrils are good for long-range grappling and increasing the user's mobility.

Smokescreen: The Quirk wielded by the sixth user, En. This Quirk allows the user to generate a thick cloud of smoke. This smoke can be used to obscure peoples vision.

Float: The Quirk wielded by the seventh user, Nana Shimura. This Quirk allows the user to levitate.

Two Unknown Quirks: Two unknown Quirks that originally belonged to the 2nd and 3rd users of One For All.

Gallery