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666 Satan  
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From VIZ:
In the not too distant future, mankind battles over O-Parts, relics from an ancient civilization. It takes a special kind of person to unlock the full potential of these remnants from the past, and a unique breed of humans known as O.P.T.s (or O-Parts Tacticians) become a force to be reckoned with. Unfortunately, O-Parts can be used for good or evil purposes.

Jio is a young boy with a tragic past who only trusts one thing in the world: money. Little does he suspect that he is actually a very powerful O.P.T., and inside him sleeps a demon of incredible ferocity. He meets up with a girl named Ruby, and together they decide to embark on a dangerous quest to discover as many O-Parts as they can. Will Jio help Ruby realize her dream of becoming a world famous treasure hunter? More importantly, will Ruby help Jio realize his dream of--world domination?!


Related Series

Associated Names
O-Parts Hunter

Groups Scanlating
Believe Manga Scans
Eternal Blue

Latest Release(s)
v.11 c.44 by Nihil Sine Nefas over 9 years ago
v.19 c.76 (end) by Franky House over 10 years ago
c.64 by Franky House over 10 years ago
Search for all releases of this series

Status in Country of Origin
19 Volumes (Complete)

Completely Scanlated?

Anime Start/End Chapter

User Reviews

5 topics, 33 posts
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User Rating
Average: 7.8 / 10.0 (997 votes)
Bayesian Average: 7.76 / 10.0
 15% (152 votes)
 17% (168 votes)
 26% (256 votes)
 23% (228 votes)
 11% (106 votes)
 4% (41 votes)
 2% (20 votes)
 1% (9 votes)
 1% (7 votes)
 1% (10 votes)

Last Updated
March 18th 2015, 10:36pm PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Shounen Gangan (Square Enix)

Licensed (in English)

English Publisher
Viz (19 Volumes - Complete)

Activity Stats (vs. other series)
Weekly Pos #493 increased(+208)
Monthly Pos #964 increased(+77)
3 Month Pos #1788 increased(+205)
6 Month Pos #2058 increased(+493)
Year Pos #2329 increased(+325)

List Stats
On 798 reading lists
On 524 wish lists
On 2654 completed lists
On 179 unfinished lists
On 240 custom lists

Note: You must be logged in to update information on this page.

Forum Posts
timeskip location over 5 years ago
An Anime? over 7 years ago
666satan's ending. over 8 years ago
a question please over 9 years ago
Confusion? over 11 years ago

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User Comments [ Order by time added ]

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Rating: 6.5 / 10.0
by bjorie
April 9th, 2008, 5:04pm
At first I didn't like the art, the girls were drawn really badly (even though their boobs are huge, they looked fat at times because of the size of the thighs and such...). After the time skip, I believe the art looked nicer, but that's the only good thing about the time skip.
The story was super complicated, with everyone's background magically intertwining, and always being in the same location, at just the right time.
I found the story interesting at first, with the different o-parts (made me think of Dark Cloud, where you find weapons, or have your own and upgrade them to a certain degree), but the story always felt rushed, and some battles ended inappropriately (super hyped up character, fight ends with the dog beating it, or something).
It was okay, but with majorly powerful characters, sucky bad guys, rushed and diappointing ending, and cliche sayings about togetherness that would even embarass Captain Planet; some people might want to steer clear.
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Rating: 8.3 / 10.0
by Soujirou
December 15th, 2008, 7:06am
lol... from all i've been hearing about the ending.... it really does suck but it wasn't as bad as i thought it would be. just be a total pessimist when you read it and it should come out better than you expected.
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Rating: N/A
by danielabda
May 21st, 2008, 2:05am
At one point i liked this better than naruto..although there are cliches, its a get over it...yes the author is related to that of naruto, yes there are many similarities..personaly i think they should have made this into an anime instead...but well, what can you do. Overall the story was pretty good..the time skip was better only b/c the characters looked better..the ending IMO is the only thing that fell just seemed so sudden to end the story..
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Great Shounen.   
Rating: 10.0 / 10.0
by llbloodll
April 9th, 2007, 10:32pm
I am surprised about the lack of popularity with this series, because in reterospect it is just a beefed up Naruto with more potential if you ask me. Anyways this series really does show some really touching concepts, from my favourite scene (probably in any manga) would be when you see Jio and Ruby sitting upon the ship viewing the moon, simply speechless with that. Aside from that, the characters themselves are built up exceptionally well for a Shounen manga, and I like how the characters were given time to develop and even more so how the time-skip aided instead of taking away from the whole thing - although I did not like how it was done in close proimixity to Naruto, but it did pull it off much... much better.

Anyways, this just one of the best Shounen's around and is still going strong. 10/10

Add on, I'd like to say that, for all you people saying that Naruto and 666Satan are copies are therefore 666Satan is junk I'd like to advise you otherwise. If you don't look at the similarities between the manga's and see the series itself as a whole, 666Satan is brilliant. Utilizing concepts that are only a step below Evangelion, bringing out characters with real feeling, and the stunning fighting scenes top it all off. All in all, 666Satan proves itself time and time again, and I think that even when compared to it's Naruto counterpart, it only excels even more.

... Last updated on May 2nd, 2007, 11:58pm
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Its cute   
Rating: 8.0 / 10.0
by badkittygrl4567
January 12th, 2011, 6:23pm
Naruto is way more boring and 50 times longer.

I enjoyed this. Its very "shounen". The main character is fun to look at. He's got a groovy design.
To me. He's a crybaby who's been bullied. He is bitter because of it, so he develops the crazy ambition to take over the world. Ruby joins him and definetly softens his outlook on life.
The are supposed to be looking for o-parts, but really they are journeying around and finding powerful bad guys that they end up fighting. And the bad guy fighting escalates to "were gonna destroy the world" bad guy levels. That doesn't bother me. What bothers me is the ending. It feels really rushed and leaves at of questions, plus its kind of sad.
I would give it a ten if it had a better ending.

... Last updated on November 29th, 2015, 10:40pm
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it was good, but now...   
Rating: N/A
by Magnum
December 24th, 2007, 5:50am
it wa going very good until this sudden ending which left a lot of mysteries unsolved , because of the bad ending I'm giving it an 8/10, too bad it wasn't a 10
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If you like Naruto and need a little break from it   
Rating: 9.9 / 10.0
by gindorobo
December 5th, 2012, 6:53am
I gotta say I enjoy this A LOT more than Naruto, but all I can say is for the naruto fans out there... Of course "this is a lot like naruto"! the author of this manga KISHIMOTO Seishi IS THE TWIN BROTHER OF KISHIMOTO Masashi who is the author of naruto, so of coarse you will see alot of similarities in their work
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Worth Reading   
Rating: 8.5 / 10.0
by killingspeer
May 7th, 2012, 3:26am
Well many people may think that this manga is similar to Naruto but i say that this has a totally different plot and storyline than Naruto. If you are a fan of RPG games then this may somehow grab your attention since it has some similarities with games because each weapon has different ability and they mention its effects and level so it is kinda fun.

But the characters growth effects the manga a lot for example the manga has 3 timelines, one which Jio is 13, then when he gets 14 and finally when he gets 16 and at the first volume you may feel that the manga isnít that great since the plot is really old (Ruling the World) but later when the main characters get to fight the main evil organization the awesomeness starts.

And the fighting scenes are great plus there are many funny moments and I didnít really feel that it is similar to Naruto beside having a beast in someoneís body wasnít created by Naruto, there were many other manga that had something like that so you must check on this manga.

... Last updated on May 7th, 2012, 3:29am
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Medicore formulaic shounen.   
Rating: 6.0 / 10.0
by GoldenKaos
December 29th, 2011, 8:19am
Enjoyable enough, perhaps a little above 'medicore' but seriously, not much.

Characters are ... shounen-y, powers and fights can be quite interesting, but still pretty ...shounen-y.

It's another one of those DragonBall (not DBZ) inspired manga, as in it took actual parts of DragonBall's training arcs and shamelessly plonked them in.

Incidentally, all the Naruto comparisons are for these reasons:

1. The two mangaka are twin brothers (which goes a long way to explain why they're so similar).
2. Naruto has a demon fox sealed inside him, Jio Freed has Satan sealed inside him.
3. Ambitions - Naruto wants to become the next and greatest of the Hokages, Jio wants to conquer the world
Spoiler (mouse over to view)
which he eventually achieves in the wussiest way imaginable, his first efforts weren't stellar either
4. Art style is very similar.
5. Antagonists who want to capture/control all the demons/angels (666Satan) or Tailed Beasts (Naruto) to attain their goal. Which is also rather similar in nature.

However, they are quite different manga, and Naruto manages to be better for actually kicking ass more consistently. Of course it has its flaws (it's called Sasuke
Spoiler (mouse over to view)
at the time he was, he ain't no more
) and for not being completely formulaic all the time. We've yet to see if the ending will please of course, let's hope Kishimoto Masashi does not have his brother's taste for endings (slightly off-topic spiel over).

Read it if you're bored essentially. Enjoyable enough to give it a go, but don't expect to be surprised, this is a standard shounen through and through.

... Last updated on August 29th, 2013, 2:11am
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Kind Of Stereotypical   
Rating: 6.2 / 10.0
by robbit
March 16th, 2010, 8:06am
Let's start at the beginning. The Very first chapter of this manga was a bit of a put off because the structure of the chapter itself was stereotypical and milked to death. It does fairly well at introducing the manga but anyone who is looking for a good manga by randomly sampling is going to be put off.
The story progression is fairly linear with mid length arcs but with not much in terms of the plot. The character growth is constant throughout the story but with the concept of the powers incorporated, the power growth is fairly limited. The timeskip roughly two thirds into the story serves only to complicate matters as all problems related to it disappear within a matter of pages. The story from there on out is predictable and boring, in contrast to the first half which was at least kind of random.
The characters themselves are nothing new with the exception of Ball. Jio, Ruby, Cross, Kirin... I feel like i have seen their precursors in many other mangas. This can't be helped in most cases just in terms of the overused plot of sealed demons with the strongest within the main character as well as other not-quite-as-strong demons/angels in other less important characters.
The ending, as others have remarked, is a bit disappointing, not because there were gaping holes but the fact that you have no idea why the characters would do such a thing. The characters seem so content with their absurd reality that you have to laugh at their stupidity (the only funny moment in the story).
That said, its really not that bad a read, provided you have nothing else to read and are either ten years old or your brain is in outer space or somewhere else it shouldn't be.
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