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Horu Horu no Mi

Character

A Paramecia of the medical sort, this power lets its bearer brew tailor-made hormones and inject them to remodel a body however they choose. Emporio Ivankov ate it, gaining the epithet Hormone Controlling Human and a lasting reputation as a worker of miracles.

Type: Paramecia
Epithet: Hormone Controlling Human
Meaning: Hormones
Japanese Name: ホルホルの実
First Appearance: Chapter 537; Episode 439
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Overview

Sorted with the Paramecia, this ability grants its owner a whole dispensary of hormones they conjure at will. Anything the wielder produces can be driven into a target to remake that person from the inside out, all the way down to their genes. Emporio Ivankov consumed the fruit at some point after the God Valley Incident, and the ability became the machinery behind his renown as the so-called Miracle Person. Since a body can be rewritten along almost every axis, the range on hand feels close to boundless. A subject's sex, core temperature, skin color, growth, endurance, and even their emotional state can each be turned up or down. The snag is that the chemistry runs strong enough to rebound, and leaning on it too hard invites genuinely deadly outcomes. In every other respect the eater still bows to the usual seawater handicap that grounds all Devil Fruit users.

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Mechanics

To deliver a dose, Ivankov hardens his fingers into needle-tipped injectors and stabs the formula straight into a recipient, himself included. A burst of adrenaline keeps an exhausted ally swinging, while enlarging a body part amplifies an attack, which is how Ivankov balloons his own head to supercharge his Hell Wink. Flipping someone's sex is also fair game, turning a man's frame supple and springy so blunt strikes barely register. Healing formulas exist too, unlocking the immune system to drag a poisoned or diseased victim back from the brink.

None of this comes cheaply. The healing route is agonizing and slow, dragging on for hours or days, so only the strongly willed pull through, and a serious cure can shave years off a person's lifespan. The signature techniques showcase the range: Emporio Onna Hormone rewrites a male into a female, an unnamed male variant does the reverse, Emporio Chiyu Hormone supercharges recovery, Emporio Tension Hormone floods the body with adrenaline at the cost of later nausea, and Emporio Ganmen Seicho Hormone swells the face to giant proportions.

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Notable Users

Emporio Ivankov is the sole wielder, and the fruit defines both his combat style and his legend. He treats gender as a plaything, swapping forms alongside his ally Inazuma, and the Newkamas of Impel Down's hidden level have reportedly all switched sexes under his influence. In battle the same powers make him stubbornly hard to put down, letting him trade blows with Magellan and Akainu yet bounce back thanks to self-administered healing and tension hormones. His most famous save was reviving Luffy after Magellan's poison, a cure that would have drained ten years had Luffy's will not been strong enough.

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Frequently Asked Questions

What is the Horu Horu no Mi?

The Horu Horu no Mi is a Paramecia type Devil Fruit that lets its user create and inject tailor made hormones to remodel a body from the inside out, down to the genes. Emporio Ivankov is its only known user.

Can Horu Horu no Mi change gender?

Yes, the Horu Horu no Mi can change a person's sex. Emporio Ivankov injects an Emporio Onna Hormone to turn a male into a female, and an unnamed variant to reverse a female into a male.

Is there a Devil Fruit that changes gender?

Yes, the Horu Horu no Mi is a Devil Fruit capable of changing a person's gender. Emporio Ivankov, its only user, has used it to switch his own sex as well as others', including the Newkamas of Impel Down's hidden level.

Who is the user of the Horu Horu no Mi?

Emporio Ivankov is the sole known user of the Horu Horu no Mi, earning him the epithet Hormone Controlling Human, also called the Miracle Person.

How did Ivankov use the Horu Horu no Mi to save Luffy?

Ivankov used the Horu Horu no Mi's healing hormones to revive Luffy after Magellan's poison at Impel Down, a cure that would have cost him ten years of his life had Luffy's will not been strong enough to endure it.

Sources & Information

Looking for more on Horu Horu no Mi? The One Piece Wiki on Fandom has a dedicated page with community notes.

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This content is original writing by Daddy Jim Headquarters based on the One Piece anime series, manga, and official materials. Episode and chapter references are cited where applicable.

Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:

  • Movie pages: theatrical posters and key visuals, credited to Toei Animation and Toei Company.
  • Game pages: official box art for the One Piece console and mobile games, credited to Bandai Namco.
  • Manga chapter pages: Jump Comics volume covers, credited to Shueisha and Eiichiro Oda.

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