All For One’s Immortality Quirk Explained in My Hero Academia

A central villain has cheated death for over a century in My Hero Academia. All For One’s prolonged reign of terror is not a natural phenomenon. It stems directly from a specific, life-extending quirk.

This power has allowed him to operate from the shadows across multiple generations. His apparent immortality is a key factor in the story’s enduring conflict.

The Secret Behind His Extended Lifespan

All For One’s long life is granted by the “Life Force” quirk. He did not originally possess this power. It was given to him by his loyal scientist, Kyudai Garaki.

Kyudai was born with the Life Force quirk. It naturally doubles the user’s lifespan. He created a copy for himself and gave the original to his master.

This transfer allowed both men to live for well over a hundred years. The quirk also dramatically slows their aging process. This explains their relatively youthful appearance despite their advanced age.

All For One is not truly immortal. He can be killed through sufficient force. The Life Force quirk simply makes his natural life exceptionally long.

The Dangerous Rewind Effect

Recent events have introduced a new complication. All For One appears to be getting younger. This is the result of a reverse-engineered drug.

The drug was created from Kai Chisaki’s original Quirk-Destroying formula. Kyudai Garaki modified it to create a “rewind” effect. It heals injuries and reverses the user’s age.

This process is uncontrollable and potentially fatal. The user will continuously grow younger. They will eventually de-age into nothingness.

All For One was forced to use this drug after a near-fatal injury. He now races against time as he rapidly grows younger during battles. This adds a new layer of urgency to his final plans.

All For One’s immortality was a carefully constructed advantage, not a birthright. His current de-aging presents a final, unpredictable countdown to his ultimate fate in the series.

Thought you’d like to know

Is All For One truly immortal?

No, he is not truly immortal. His long life comes from the Life Force quirk, which extends his lifespan. He can still be killed by powerful attacks.

Who gave All For One his immortality?

His scientist, Kyudai Garaki, bestowed the Life Force quirk upon him. Kyudai was the original holder of this life-extending power.

Why is All For One getting younger?

He used a reverse-engineered drug based on the Quirk-Destroying formula. This drug triggers an uncontrollable de-aging process that heals injuries.

What is the weakness of the Life Force quirk?

The quirk slows the user’s movement significantly. All For One counteracts this weakness by using other quirks in his arsenal.

Can the rewind effect be stopped?

No, the de-aging process is unstoppable once initiated. The user will continue to grow younger until they cease to exist.