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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
666 Сатана
666 사탄
O-Parts Hunter
Satan - The Number of Beast 666

Groups Scanlating
Believe Manga Scans
Eternal Blue

Latest Release(s)
v.11 c.44 by Nihil Sine Nefas over 10 years ago
v.19 c.76 (end) by Franky House over 11 years ago
c.64 by Franky House over 11 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: 7.7 / 10.0 (1013 votes)
Bayesian Average: 7.66 / 10.0
 15% (153 votes)
 16% (167 votes)
 25% (258 votes)
 23% (232 votes)
 11% (110 votes)
 4% (42 votes)
 2% (21 votes)
 1% (11 votes)
 1% (8 votes)
 1% (11 votes)

Last Updated
November 4th 2018, 8:42am 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 #577 increased(+84)
Monthly Pos #1182 increased(+130)
3 Month Pos #1778 increased(+219)
6 Month Pos #2319 increased(+220)
Year Pos #2621 increased(+10)

List Stats
On 805 reading lists
On 526 wish lists
On 2686 completed lists
On 182 unfinished lists
On 251 custom lists

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

Forum Posts
timeskip location over 6 years ago
An Anime? over 8 years ago
666satan's ending. over 9 years ago
a question please over 10 years ago
Confusion? over 12 years ago

Click to view the forum

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User Comments [ Order by usefulness ]

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Mediocre, uninnovative shounen   
Rating: 2.2 / 10.0
by asmageddon
October 12th, 2018, 7:34am
Pretty much what you could expect out of any other shounen. Young male lead with mysterious powers, unusual past, useless female companion for him to rescue a number of times, a rival, power levelups, overcoming things through the power of determination, and all of it really bland, with a grand evil scheme threatening the world that makes as little sense as it usually does.
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A huge wast of time   
Rating: 3.7 / 10.0
by Xtrathx
September 6th, 2018, 5:31am
Listen, i enjoy shonen more than the avarage reader, but saying that this manga it's generic it's not enough to put into perspective how formulaic everything is, if you have read a decent amount of shonen you're going to be able to predict every plot twist on the series. Also words can't describe how forced some of the "sentimental" scenes are in here, for the most part the majority of secondary characters are introduced on an episode and you're expected to get sentimental over their situation even tho they had barely any screen time. The humor it's meh. The characters designs are ugly as sin, specially kid Jio who is the definition of overly designed. The idea of hunting rare O parts sounds fun, but that gets immediately forgotten in order to have more fights and that wouldn't be a problem if the fights where good, but they're not, the fights are extremely repetitive, formulaic and predictable and if you hate mangas like Fairy tail where the power of friendship wins everything, BOI this manga it's definitely not for you

Spoiler (mouse over to view)
there's one scene and a characters who made me consider giving this a higher score, Kirin. He's the best character on the series and almost every piece of good writing it's dedicated to him and while I'm not a fan of the fights in this manga, the resolution of his fight with Kujaku was extremely satisfactory and by far the best fight in here, it's a shame that the chapter following that fight it's one of the worse episodes of the series.

Also yeah, the ending it's a complete mess with a lot of plot holes but that's whatever, I'm more disappointed over the fact that the undertones of life being nothing but a cycle of information never got the time it deserved, seriously that's the most interesting stuff in the manga but instead o talking about that they talk about friendship and the value of feels? You could at least tie both of those together and have an intellectual fight or whatever, but that would require original writing and we can't have that.

If i had to say something good about 666 Satan; the Demon/Angels designs are on point.

... Last updated on September 6th, 2018, 5:39am
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Generic Shounen   
Rating: 5.0 / 10.0
by PZcolo
March 30th, 2017, 11:23am
Nothing really interesting here but one more unmemorable shounen manga with a predictable formula and characters.
The art-style is not very good either and the flow of panels in fights is confusing.
I for one find it more similar to rave and DB (at the beginning) than to Naruto.
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ookaay. good read - crappy ending.   
Rating: 7.0 / 10.0
by wintermelon
October 3rd, 2013, 5:06am
(its not finished and im still not bored about it (quite the opposite) its alot like naruto but WAY cooler~
but the last few episodes were a bit draggy and slow.. but the rest of the manga were fantastic so it kinda makes up for it biggrin )

^ So that's when i was still reading it... 5 years ago in 2008, when I started the last two chapters I just stopped because it was totally out of pace. I only decided to finish it now for the sake of finishing it -w-;
666 satan has some really original ideas, and I loved the addition of angels and demons... but the ending...It just wasn't cool or dramatic and I didn't connect with it well. It was like... ooo tentacles drop from the sky and wrap people up into this gum ball thing and wants to destroy everyone while laughing "Kuhohoho".... no, REALLY ?? HAhaha I'm sure there are a thousand more creative and gripping ways to end it =w=;

haii, i wish the author did a better ending!!!

It has some really nice ideas nevertheless.. i would recommend it, but it's not on top of my list.
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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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just pointing out   
Rating: N/A
by aclgrafix
October 19th, 2012, 9:18am
to all the people saying stuff like "this is alot like naruto" id just like to point 1 major thing out, 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

also from what ive read (^chap 25), the only REAL similarity is the art, other than that its nearly completely separate from naruto

... Last updated on October 19th, 2012, 2:27pm
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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 isn’t 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 didn’t really feel that it is similar to Naruto beside having a beast in someone’s body wasn’t 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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Actually was one of my firsts.   
Rating: 8.0 / 10.0
by nectarinemoans
April 2nd, 2012, 4:34pm
Although I do agree with most everyone, the ending was just not what I was expecting. And if anyone had the time to actually look, the author is actually the twin brother of the guy who created Naruto. I personally hate Naruto, but that other than the fact that the authors are siblings that is the only thing that has to do with this manga. I really enjoyed reading this long ago, but as I'm reading it again I see that it could've had more going for it. I still give it like a 7-ish.
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Rating: N/A
by mixxyum
February 16th, 2012, 8:42pm
it was pretty interesting until the ending...
the ending was just strange... and i didn't get it until i read the wikipeida page for this...
otherwise the beginning and mid were pretty okay.
the ending just, sigh, sucked and brought this down to a 7 :[
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It was Alright...   
Rating: 7.5 / 10.0
by BlackAriel98
February 9th, 2012, 7:24pm
It had a good story, though lots of things I could compare to Naruto, sadly (I never enjoyed Naruto) and because of all these similarities, it seemed less original. I could brush it off with the "same inspiration" excuse though. Now let's review...
I loved the story... to a point. I could do without a few things, but other than that it was fine. The way it was executed sometimes though, was badly done. Also, again, many similarities with Naruto.
Art was the same/close to Naruto's, but once again, "same inspiration" excuse was used for my enjoyment of this series to continue. I also don't think that Naruto and 666 Satan's is the best/greatest, many other works are ten times better.
Characters... some I liked, some I didn't. I disliked Ruby and Mei, same with other females that made me ashamed to be female. The characters weren't always chivalrous, and rash, which made me like the characters more (the stupid, brave, and strong characters annoy me after a time), but then again, some were like that.
I also want to point out, the ending wasn't as bad as people were saying... it just wasn't the usual "happy ending" that many prefer to have. Although it wasn't exactly the best way to end the series though... all in all, it was good, I enjoyed it.
This series deserves a 7.5, because even though it was a great story, it wasn't executed well, the characters weren't all original, and throughout the series, I always inadvertently compared it to Naruto.
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