Summary

  • All Might's lack of quirk was a saving grace for One For All.
  • One For All diminishes the lifespan of most wielders, making quirkless Toshinori an accidental, huge asset to the quirk's lineage.
  • Toshinori was the right person at the right time to become the 8th holder.

All Might, aka Toshinori Yagi, had an impressive reign as the most powerful hero for a long time in the world of My Hero Academia. He manages to accomplish this even though he was originally born without a quirk. This fact was one that he hid from the world, along with the powerful quirk he inherited, One For All. Originally, the holders of One For All had their own quirks in addition to it, something that only changed when Toshinori became the eighth holder.

While Toshinori didn’t contribute his own quirk to the mix as the previous holders did, the fact that he was quirkless actually ended up saving the quirk and the world against the evil of All For One. The details of why being Quirkless was actually a benefit for All Might are first revealed in Season 6 of the My Hero Academia anime.

picture: bakugo in the cover of my hero academia volume 7.
My Hero Academia: Why Bakugo Deserves To Be Number 1 Hero

Katsuki Bakugo goes through an amazing journey in My Hero Academia, and he deserves to become Number 1.

5

The Perfect Vessel

Why All Might as the 8th Wielder Was Almost Fate

all might saving everyone
All Might carries countless civilians to safety. (My Hero Academia)

In episode 131 of the series, Deku discovers in a meeting with the vestiges of the previous wielders that One For Al has negative effects when inherited by those already with their own quirks. As One For All grew stronger with each generation, the power contained within it harmed a normal person’s body and could shorten their lifespan.

I’m quirkless. Born without a role.

This was discovered when the 4th holder’s autopsy report revealed that he had died of natural causes and old age at only 40 years old. The 4th holder, Hikage Shinomori, had isolated himself during his turn to avoid the powerful All for One and train the quirk as much as he could before passing it on. However, he eventually found his body started to break down prematurely. This side effect could have only worsened if more quirk holders were chosen as successors.

However, unbeknownst to the holders of One For All, they had made an incredibly fortunate choice by having Toshinori become the next bearer. If Toshinori had held a quirk, he wouldn’t have had 40 years to become the world’s symbol of peace because his lifespan would be shorter. Not only did Toshinori’s reign as All Might prepare the world for All For One’s eventual defeat, but Toshinori himself was critical in aiding his new successor in the final war.

In Deku’s meeting with the vestiges, Toshinori is described as the perfect vessel for the culmination of One For All’s power. His incredible physical prowess, despite being quirkless, allowed him to safely contain the quirk and use it at 100% without repercussions, unlike Deku.

My Hero Academia Midoriya Izuku Deku
My Hero Academia: Did Deku Surpass All Might's Legacy?

Deku has always wanted to be the greatest hero. With his accomplishments, has he surpassed All Might's legacy?

1

A Twist of Fate

Why One For All Would Eventually End

all might punch
All Might uses the last of his One For All quirk to deliver a final punch. (My Hero Academia)

Despite being a power that was successfully passed down so many times, One For All had a limited lifespan. This was because it would eventually grow too strong to be used by normal humans. Only a quirkless person stood a chance to use it properly as it grew, and even then, that quirkless person needed to be someone who was incredibly powerful on their own. This is why it was so lucky that All Might became the holder when he did. If One For All was passed onto another person with a quirk instead of him, even for just one generation, it might not have ever made it to a quirkless person again. This would have meant its lineage would have ended before All For One could be stopped.

I believe you’re worthy… of inheriting my power!!

In episode 131, it is implied that Deku, regardless of what happens in the future, would likely be the last holder of One For All. Not only would it be difficult to track down a worthy quirkless person in an era where quirkless people were becoming extinct, but One For All could only continue to grow in power. This could mean it would eventually outscale anyone’s capacity to use it. Although he was chosen to be a One For All wielder without this in mind, the fact that he was quirkless saved the timeline in My Hero Academia and the quirk One For All long enough to accomplish its original goal of defeating All For One.

My Hero Academia can be streamed on Crunchyroll and Hulu.

Rating block community and brand ratings Image
03175744_poster_w780-1.jpg
Display card tags widget Display card community and brand rating widget Display card main info widget
Release Date
2016 - 2025-00-00
Network
TBS, MBS, Nippon TV
Directors
Shouji Ikeno, Tsuyoshi Tobita, Ikuro Sato, Takudai Kakuchi, Masashi Abe, Tetsuya Miyanishi, Kazuma Komatsu, Yoshifumi Sasahara, Masayuki Otsuki, Daisuke Tsukushi, Takayuki Yamamoto, Yohei Fukui, Takuro Tsukada, Masatoyo Takada, Naomi Nakayama, Sayaka Morikawa, Takanori Yano
Display card main info widget end Display card media widget start Display card media widget end
  • Cast Placeholder Image
    Daiki Yamashita
    Izuku Midoriya (voice)
  • Cast Placeholder Image
    Kaito Ishikawa
    Manga Fukidashi (voice)

WHERE TO WATCH

Streaming
Checkbox: control the expandable behavior of the extra info

In My Hero Academia, some humans have superpowers called quirks. Izuku Midoriya, nicknamed Deku, is not one of them. Deku has always idolized heroes like the number one hero, All Might, and since he was a child, he has always wanted to be a hero. However, his lack of a quirk has always held him back, but a chance encounter with All Might after discovering a classmate in danger sets Deku on the path to becoming a true hero. My Hero Academia centers around Deku and a class of heroes-in-training at UA. This school shapes young quirk users into future heroes through fake rescue missions, combat training, and other hero-tempering tasks. With young Deku inheriting the "One-For-All" quirk, he will learn what it means to be a true hero while facing off with dastardly supervillains.

Seasons
8
Studio
Bones
Franchise
My Hero Academia
Characters By
Kohei Horikoshi
Japanese Title
Boku no Hero Academia
Based On
Manga
Creator
Kōhei Horikoshi
Distributor
FUNimation Entertainment
Main Characters
Tsuyu Asui, Katsuki Bakugo, Ochaco Uraraka, Izuku Midoriya, Shoto Todoroki, All Might
Production Company
Bones
Story By
Kōhei Horikoshi, Yōsuke Kuroda
Number of Episodes
159
Streaming Service(s)
Hulu, Crunchyroll
MyAnimeList Score
7.85 (Season 1)