M3: Sono Kuroki Hagane

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Alternative Titles

Synonyms: M3: Sono Kuroki Tetsu, M3 The Dark Metal, Mortal Metal Memories
Japanese: M3~ソノ黒キ鋼~


Type: TV
Episodes: 24
Status: Finished Airing
Aired: Apr 22, 2014 to Sep 30, 2014
Premiered: Spring 2014
Broadcast: Tuesdays at 01:35 (JST)
Licensors: None found, add some
Studios: Satelight
Source: Original
Genres: ActionAction, DramaDrama, MysteryMystery, Sci-FiSci-Fi
Themes: MechaMecha, PsychologicalPsychological
Duration: 24 min. per ep.
Rating: R - 17+ (violence & profanity)


Score: 6.581 (scored by 1848018,480 users)
1 indicates a weighted score.
Ranked: #61802
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #2704
Members: 55,685
Favorites: 81

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Ranked #6180Popularity #2704Members 55,685
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Episodes: /24
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In a dark void known as the Lightless Realm, a group of children meet and bond, but are then separated and returned to their own dimension. Years later, these children reunite to fight "Admonitions," monsters that originate from the same void, using robots known as "Vess." However, their efforts only slow the ever-encroaching and expanding Lightless Realm from infecting their world.

Their lives take a drastic turn when a new foe appears in the form of a "Corpse," whose song is rumored to kill any who hear it within nine days. The "Corpse Song" is heard by the group, and with this, they each begin to pull away and become caught up in their own personal problems—ultimately threatening the fate of humanity.

[Written by MAL Rewrite]


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Related Anime

Characters & Voice Actors


Satou, Junichi
Hamano, Takatoshi
Sound Director
Itou, Tatsufumi
Episode Director, Storyboard, Assistant Animation Director, Key Animation
Kanbara, Toshiaki
Episode Director


Opening Theme

Apple Music
Amazon Music
Youtube Music
1: "Re:REMEMBER" by May'n (eps 1-13)
2: "Replica (レプリカ)" by Maaya Sakamoto (eps 14-23)

Ending Theme

1: "ego-izm" by la la larks (eps 1-13)
2: "SABLE" by nano (eps 14-23)
3: "Replica (レプリカ)" by Maaya Sakamoto (eps 24)

Oct 7, 2014
First of all, I'd like to say that the key to truly enjoying M3 is having an interest in a series that not only showcases sci-fi/fantasy elements but also has the tendency to go deep into the characters' psyche, exploring their personalities and how they came to be like that. I'd go beyond that and say it's not so much about the story but the journey these people go through and the very simple yet effective and truthful message it’s trying to convey about what connecting with others truly means.

Story 8/10

It starts really slow and sligthly confusing. I'd say this is the main downfall ...
Oct 3, 2014
Mixed Feelings
Ok, so I've just finish watching this 24 episode anime and quite frankly I have mixed feelings about it, so I'm gonna cut to the chase and just present my ratings for this anime:

Story: Decent 4.

The problem with the story was that it has too much in it that the plot and the story-line itself wasn't easily understood, especially when it has a mixture of sci-fi mixed with supernatural, in my opinion the two genres are like oil and water that don't mix, it also has a combinations of "SOMEWHATS" and SOME SORTS"and I do mean "SOMEWHATS." First of all there is that somewhat of ...
Feb 10, 2015
I do not know why people dislike this anime, or the amount of hate I get from people watching this, maybe because this is pretty slow-paced, so most watchers didn't continue to bother watching this series. First of all I'd like to say that watching this anime episode by episode will only bore us, and that's why I think most people dropped this show. Maybe they don't find it appealing enough, or because of the slow start, forgettable characters, and the mediocre animation. So I advise everybody who plans to watch this anime : WATCH THIS STRAIGHT.

The story is good, the synopsis explains that ...

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Recent News

Spring 2014 Simulcast List [Update 4/19]

Spring 2014 Simulcast List [Update 4/19]

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In this thread, you'll find a comprehensive list of Spring 2014 anime commercials (CMs) and promotional videos (PVs). This post will be continuously updated as ...read more

Recent Forum Discussion

Similarities with Sidonia no Kishi regarding monsters & Spear
Aragusuku - Mar 27
1 replies by Azriel-san »»
Mar 27, 11:24 PM
Poll: M3: Sono Kuroki Hagane Episode 24 Discussion ( 1 2 )
Stark700 - Sep 29, 2014
73 replies by Ninojoe »»
Jul 27, 2022 3:03 PM
Poll: M3: Sono Kuroki Hagane Episode 16 Discussion
Stark700 - Aug 4, 2014
48 replies by syncrogazer »»
Jan 25, 2021 5:39 PM
Poll: M3: Sono Kuroki Hagane Episode 12 Discussion
Stark700 - Jul 7, 2014
44 replies by syncrogazer »»
Jan 24, 2021 5:39 PM
Poll: M3: Sono Kuroki Hagane Episode 9 Discussion ( 1 2 )
Stark700 - Jun 16, 2014
56 replies by josueuler »»
Oct 19, 2019 3:31 AM
It’s time to ditch the text file.
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