《My Hero Academia》's Biggest Mystery: Who is Izuku Midoriya's Father? A Complete Analysis from Popular Theories to the Final Outcome

Preface: The Father Who Doesn't Exist Behind the Hero

In the epic story of "My Hero Academia," almost all major characters have distinct family backgrounds, except for the father of the protagonist Izuku Midoriya (Deku), who remains a mystery. Who is he? Where is he? Why has he never appeared on his son's hero journey? The keyword "Izuku Midoriya's father" has become one of the most intensely discussed and deeply mysterious foreshadowings among fans over the years.

This article will organize all official information about Midoriya's father, delve into the most famous popular hypothesis—is he All For One?—and, based on the now-completed manga, reveal what the ultimate answer is to this greatest mystery that runs through the entire work.

Official Setting: What We Know About "Hisashi Midoriya"

Although he is a mysterious figure, author Kōhei Horikoshi has indeed provided a small amount of official information about Midoriya's father:

• Name: Hisashi Midoriya (みどりや ひさし / Midoriya Hisashi)
• Quirk: Fire Breath (Able to breathe fire from his mouth)
• Current Status: Currently working overseas.

This information comes from the first chapter of the manga, mentioned by Izuku's mother, Inko Midoriya, to a doctor at the hospital. Beyond this, there is no further elaboration in the story. He has never made a phone call, nor has he appeared in any flashback scenes. This deliberate "non-existence" has instead sparked endless speculation among fans.

The Biggest Hypothesis: Is He the Arch-Nemesis All For One?

Among the many theories, the most widespread and shocking is undoubtedly the "Hisashi Midoriya = All For One" hypothesis. Supporters of this theory have put forward several highly persuasive points:

1. Quirk Match: All For One's (AFO) ability is to steal and use others' Quirks. For him, faking a "Fire Breath" Quirk would be extremely easy.
2. Doctor Connection: The doctor who diagnosed Midoriya as "Quirkless" was none other than AFO's confidant, "Dr. Kyudai Garaki." This led many to suspect that Midoriya was not born Quirkless, but rather his Quirk was stolen in childhood by his father, AFO, in collaboration with the doctor.
3. Homage to Star Wars: "My Hero Academia" contains numerous homages to Star Wars. "The righteous protagonist confronting his evil father" is Star Wars' most classic plotline (Luke vs. Darth Vader). Applying this to Midoriya and AFO seemed like a natural homage.
4. Fated Confrontation: If Midoriya were AFO's son, his confrontation with AFO's successor, Tomura Shigaraki, would add a layer of "brotherly" tragic destiny, raising the story's dramatic tension to its peak.