My Hero Academia: Izuku Midoriya’s Fa Jin Quirk, Explained

My Hero Academia: Izuku Midoriya's Fa Jin Quirk, Explained

Key Takeaways

  • Fa Jin, an emitter-type quirk, allows Midoriya to store and release kinetic energy for explosive attacks.
  • The quirk becomes more powerful when combined with other abilities, creating ultimate moves like Faux 100 Percent.
  • By innovating new techniques and combining Fa Jin with other quirks, Midoriya becomes a formidable hero in My Hero Academia.

As a dedicated fan of My Hero Academia, I find myself constantly amazed by the intricate world that Kohei Horikoshi has created. One character who truly stands out among the rest is Izuku Midoriya, the young hero with an indomitable spirit and an extraordinary quirk known as Fa Jin.


In the tough world depicted in “My Hero Academia,” heroes are continually under attack by villains. One standout character among many is Izuku Midoriya, a young and eager hero who yearns to emulate his idol, All Might. After receiving the One for All special power from the Symbol of Peace, he begins to develop extraordinary abilities that were previously wielded by those who used the quirk in the past.

In this write-up, we delve into the fascinating story behind Fa Jin – a power once held by a fighter in the resistance against All for One. This unique ability significantly enhances Izuku Midoriya’s combat skills, but its significance extends far beyond that, linking him to the heroic battles and struggles between heroes and villains throughout history. Here, we explore where this quirk originated, the powers it bestows upon Midoriya, and its impact on his heroic lineage.

What is Fa Jin?

One of the Oldest Quirks to Have Existed

Fa Jin is a fundamental quirk, similar to Gearshift, All For One, Life Force, One for All, and Spearlike Bones, that emerged during a time when humanity was just beginning to comprehend meta-abilities. Like these other foundational abilities, it significantly influenced the human world in intricate ways. Originally possessed by Bruce, the third user of One For All and a member of Kudo’s resistance against All for One, this quirk played a critical role in the battle against evil during dark times.

Similar to other bearers of the One for All ability, Bruce shared a strong commitment to justice and sacrificed his life battling against All for One. This made him skeptical towards Izuku Midoriya’s seemingly illogical intention to save his arch-enemy, Tomura Shigaraki, from the grasp of the Demon King. Dismayed by All Might’s successor, Bruce initially refused to aid him in mastering Fa Jin. However, under Yoichi Shigaraki’s persuasion, he ended up mentoring Midoriya, which eventually facilitated the young hero in manifesting his quirk.

Using Fa Jin, Izuku Midoriya can accumulate and save an immense amount of kinetic energy through repeated actions. This extraordinary skill lets him store this gathered power for later use. When he unleashes the stored energy, it appears as a powerful and swift explosion. He can employ this ability with any part of his body, causing it to emit red energy, which visibly signifies the build-up of force.

After building up power through repeated actions as taught by Fa Jin, Midoriya can harness explosive motion and force for a rapid-fire attack sequence against his opponent. Under the influence of Fa Jin, Deku gains speeds faster than a bullet, making him unpredictable and hard to match strategically. This leaves opponents struggling to defend themselves, as Deku’s swiftness and ferocity can catch them off guard at any given moment.

A notable example of this occurred during his battle against Lady Nagant, specifically in episode 134, titled “The Lovely Lady Nagant.” In this instance, Midoriya demonstrated remarkable bravery by outmaneuvering Kai Chisaki’s bullet, which was fired by Kaina Tsutsumi. This act alone was impressive, but Midoriya didn’t stop there. He pushed beyond the ordinary by integrating Fa Jin with other quirks and creating innovative moves that made him seem virtually indestructible.

Fa Jin Ultimate Moves

Bruce’s Meta-Ability When Combined With Other Quirks Becomes Extremely Efficient and Deadly

In a nutshell, Fa Jin is a centuries-old skill that’s incredibly potent on its own, but it truly shines when paired with other abilities to create extraordinary ultimate moves. One such creative technique is Faux 100 Percent, which Midoriya executes by propelling himself in a specific direction using Blackwhip. He then harnesses the momentum generated by Fa Jin and 45% of One For All’s power. In episode 136, titled “Deku vs. Class A,” he uses this move to escape from his friends.

In simpler terms, Manchester Smash is a new powerful move invented by Midoriya that combines Fa Jin, One for All, and Blackwhip. By employing Faux 100 Percent, he speeds up incredibly before delivering an axe kick to his enemies. During the Final War, Midoriya creates another move using Fa Jin and Blackwhip. He uses Blackwhip’s strength and Fa Jin’s energy to form a chain to trap Tomura Shigaraki. Then, taking advantage of the trapped enemy’s weakness, he hurls him over long distances.

In that very battle, I too channeled both Fa Jin and Gearshift, propelling myself at unimaginable supersonic speeds. With these moves synchronizing, each ultimate technique I executed was imbued with the immense power generated. This tactic proved to be devastatingly effective, even against the toughest of villains. The ultimate moves developed with Fa Jin not only boost my hero status but also position me as humanity’s greatest beacon in our final showdown against All for One and his confederates during the Final War.

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2024-10-03 21:33