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Haragiri (ハラギリ, Haragiri) was a swordmaster and a member of the Council of Swordmasters before deciding to join the Monster Association. He was killed by Atomic Samurai.[2]



Haragiri as a human

As a human, he had his long dark hair slick back and a prominent widow peak. He appears to be middle-age man, around the same age as Atomic Samurai. His attire consisted of a sleeveless haori over his kimono. He carries a katana sheathed away in a scabbard found on the left side of his hip. When in his monster form, his skin becomes darker and a third eye can be seen on his forehead. His teeth become sharper and his hair turn lighter in color. Additionally, it appears that his hair turns into large vines that stick out, and several veins pulse across his skin.


Haragiri is a very blithe individual who is mostly concerned about improving his swordsmanship. He believes the sole purpose of the Council of Swordsmen is to improve their swordsmanship, and that anything else, such as meetings about the hero hunter Garou, are irrelevant and contract from their original mission. In exchange for his lust for power, he completely abandoned his humanity and joined the Monster Association. After becoming a mysterious being, he became very arrogant, as he believed that he could easily kill all the other members of the Council of Swordmasters, including Atomic Samurai, whom is one of the highest ranked S-Class heroes.


Human Monster Saga

Super Fight Arc

Atomic slash harigiri

Kamikaze slashes Haragiri to pieces

During the meeting of the Council of Swordmasters, while Atomic Samurai was thanking the other members for their support in chasing down the "Human Monster", Garou, Haragiri interrupts Atomic Samurai and reveals that he joined the Monster Association who offered, in return for giving up his humanity, a power far beyond that which he currently possessed. He agreed and ingested a Monster Cell, turning himself into a mysterious being.

During the meeting of the Council of Swordmasters, he threatened to kill all members unless they ate one of the Monster Cells and "monsterize" themselves. He was about to kill Atomic Samurai regardless, as he was a target of the Monster Association, after giving them 3 seconds to eat one of the Monster Cells. He prepares to slash the hero's neck, but before his blade could reach the hero, Atomic Samurai had already unsheathed his sword and cut him into pieces with his Atomic Slash, ending the monster's life.[3]

Abilities and Powers

Haragiri was a member of the Council of Swordmasters while human and thus had masterful and high skills in swordsmanship. His transformation into a mysterious being heightened his power, and due to his previous ability to cut faster-than-sound, it can be assumed that he is at least at the disaster level of Demon. Despite his increase in power, it is still not enough to compete against the likes of Atomic Samurai.

Physical Abilities


Haragiri begins to transform

Transformation: Haragiri gained the ability to transform his physical form after becoming a monster, as he ate a monster cell prior to the meeting with the Council of Swordmasters, yet only when presenting them to the other members did he reveal his monster form.

Immense Speed and Reflexes: Prior to his transformation into a monster, Haragiri claims that he can cut at speeds faster than sound.[4] His monster transformation only served to further increase this astounding speed, but he still wasn't fast enough to react to Atomic Samurai.

Enhanced Strength: Due to the fact that he was a member of the Council of Swordmasters, it can be assumed that he has impressive strength, but even with his transformation, he was still outmatched by Atomic Samurai.

Fighting Style

Master Swordsman: As a member of the Council of Swordmasters, Haragiri was no doubt a powerful swordsman though was outmatched by Atomic Samurai.


Katana: Haragiri was shown to possess a katana that he intended to use to kill the members of the Council of Swordmasters.

Major Battles

Participants Chapter(s) Episode(s) Result
Haragiri vs. Atomic Samurai 69 19 Haragiri is killed


  • "Haragiri" is similar to the word harakiri, a ritual suicide originally performed by samurai.
  • Haragiri is among the few monsters of human origin who can access their human form, the others being Gale Wind, Hellfire Flame and Surprise-Attack Plum.


  2. One-Punch Man Manga and Anime; Chapter 69, and Episode 19
  3. One-Punch Man Manga; Chapter 69, page 13-25
  4. One-Punch Man Manga; Chapter 69, page 21


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