Mugen no Juunin: Immortal

Blade of the Immortal

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Alternative Titles

Japanese: 無限の住人-IMMORTAL-
English: Blade of the Immortal
German: Blade of the Immortal
Spanish: La Espada del Inmortal
French: L'Habitant de L'infini
More titles


Type: ONA
Episodes: 24
Status: Finished Airing
Aired: Oct 10, 2019 to Mar 26, 2020
Licensors: Sentai Filmworks
Source: Manga
Genres: ActionAction, AdventureAdventure, DramaDrama, SupernaturalSupernatural
Themes: GoreGore, HistoricalHistorical, Martial ArtsMartial Arts, SamuraiSamurai
Demographic: SeinenSeinen
Duration: 23 min. per ep.
Rating: R - 17+ (violence & profanity)


Score: 7.421 (scored by 2758027,580 users)
1 indicates a weighted score.
Ranked: #21022
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #2322
Members: 82,269
Favorites: 451

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Ranked #2102Popularity #2322Members 82,269
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Episodes: /24


Manji is an infamous swordsman in feudal Japan who is known as the "Hundred Man Killer," as he has killed one hundred innocent men. However, there is something far more frightening than his ominous reputation: the fact that he is immortal. This is the handiwork of eight-hundred-year-old nun Yaobikuni, who placed bloodworms capable of healing almost any wound in Manji's body.

To atone for his crimes, Manji resolves to kill one thousand evil men. Yaobikuni agrees to this proposal, saying that if he succeeds, she will undo his curse of immortality. Soon after this promise, Manji meets Rin Asano, a 16-year-old girl who requests Manji's assistance in killing those who slaughtered her parents.

Initially reluctant, Manji refuses Rin's desperate plea. However, owing to her evident lack of strength, Manji changes his mind and agrees to protect Rin for four years. With this partnership set in stone, the two embark on a perilous journey of bloodshed, vengeance, and redemption, each to fulfill their own life's cause.

[Written by MAL Rewrite]


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Related Anime

Characters & Voice Actors


Aoi, Hiroyuki
Hamasaki, Hiroshi
Director, Storyboard
Shimizu, Youji
Sound Director
Kitamura, Junichi
Episode Director


Opening Theme

Apple Music
Amazon Music
Youtube Music
2: "Mugen no Juunin Butouhen (無限の住人 武闘編)" by Ningen Isu [TV Rebroadcast eps 13-23]

Ending Theme

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Mar 2, 2022
This is one of those animes that you would enjoy if you studied a bit about the history revolving around the period. Though I cannot confirm the costumes' accuracy nor the protagonist's Rin's mindset to be accurate, the overall picture of seeing how the samurai is represented is told very well.

Starting with a few points to cover, the buildup of the tale is pretty average, there are the major heroes, there are the villains with empathetic backgrounds, and there are the average "hero's journey" conflicts along.

The art is actually quite well done. I enjoyed the unique way of depicting the characters and the colors ...
Aug 15, 2022
Mixed Feelings
tl;dr: An anime that has a few highs and points of interest, but is largely a mess that doesn’t handle anything its trying to do well.

This anime is a very strange one. It starts off simple enough. A girl named Rin wants revenge on a school of samurai known as the Itto-ryu, particularly its leader Anotsu, for the murder of her father and rape and kidnapping of her mother. She’s not strong enough to accomplish this, so she is advised to hire someone to fight alongside her. She ends up hiring Maji, a swordsman that seems to be pretty laid back due to how he’s ...
Mar 27, 2020
Well, this was quite unique ONA, given that its title was Mugen No Juunin or Blade of the Immortal, but it was a bit of a disappointment when the ONA itself doesn't live up to its title, so here are my ratings:

Story- Good 7: For a while it does have a very good story plot when it involves a girl who was the daughter of a certain samurai master that was killed by them Itto Ryu antagonists. But, that just as good as it get, cu'z as one gets to the middle of the series it becomes a disappointment.

Art- Good 7: It does have ...

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Poll: Mugen no Juunin: Immortal Episode 3 Discussion ( 1 2 )
JustAnotherShiro - Oct 16, 2019
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Joseahfer - Oct 9, 2019
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Poll: Mugen no Juunin: Immortal Episode 24 Discussion ( 1 2 )
KANLen09 - Mar 25, 2020
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