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Trepanation is the procedure of drilling a hole in the skull. It is said to increase the blood circulation and improve pressure inside the skull. It is also said to bring out a person's sixth sense, the ability to use ESP, see ghosts, move objects with one's mind. This is speculative fiction based on the concept of trepanation.


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Latest Release(s)
v.14-15 (end) by Illuminati-Manga (1270d ago)
v.13 by Illuminati-Manga (1467d ago)
v.12 by Illuminati-Manga (1525d ago)
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Status in Country of Origin
15 Volumes (Complete)
2 Volumes (Bunkoban - Ongoing)

Completely Scanlated?

Anime Start/End Chapter

User Reviews

2 topics, 14 posts
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User Rating
Average: 8.4 / 10.0 (730 votes)
Bayesian Average: 8.32 / 10.0
 25% (179 votes)
 26% (190 votes)
 26% (191 votes)
 12% (89 votes)
 6% (43 votes)
 2% (11 votes)
 1% (9 votes)
 1% (9 votes)
 0% (2 votes)
 1% (7 votes)

Last Updated
June 9th 2015, 9:33pm PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Big Comic Spirits (Shogakukan)

Licensed (in English)

English Publisher

Activity Stats (vs. other series)
Weekly Pos #626 increased(+126)
Monthly Pos #892 increased(+115)
3 Month Pos #930 decreased(-133)
6 Month Pos #840 decreased(-42)

List Stats
On 1341 reading lists
On 1177 wish lists
On 1070 completed lists
On 89 unfinished lists
On 345 custom lists

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Forum Posts
I have a question 1637 days, 14 hours, 56 minutes ago
Hiatus OVER 2172 days, 22 hours, 33 minutes ago

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User Comments [ Order by usefulness ]

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It was great up until the end.   
Rating: N/A
by weltall2
July 13th, 2015, 4:30pm
I love mangas and I feel that they are better than anime in many ways, but it is easier to watch rather than read, obviously. I would say that the atmosphere in anime is better, but manga many times draw me in. Now why I said that.. it has been a really long time since a manga made me read nonstop from beginning to the end. It is so rare to find manga's and I started reading after a guy suggested it. But I literally started reading it today (Well kind of yesterday since it is 2am now that I am posting, but you know what I mean) and finished it. I am not sure how I could describe it... truthfully with this manga 1 picture can result with 1000 words. I highly suggest it to everyone, at least up to the point he starts seeing things.

A lot of scenes and moments are disturbing, so if you are a closed mind person I suggest to skip it. It would make you feel unpleasant a lot of times.

I do want to though point out something about the ending that will be a spoiler for anyone that will see it so... if you do not want to see it, don't. I just want to express about not expecting this.
Spoiler (mouse over to view)
I expected a better ending and I am not talking particularly about a happy ending. Actually with such a story I did not expect a happy ending at all. In the end he ends losing his mind after he finds his supposedly real self. The end was nice to be honest but felt quite unrewarding. Like you read a story of a man struggling to achieve something and as soon as he gets 1 step away from realizing his goal, he dies. (PS: The guy does not die).

It is a shame the ending felt so unrewarding (to me), but then again it was ok and an acceptable ending. I would by no means call this a bad ending.The ending though is the only reason it does not get a 10/10 since the ending of a story to me holds 70-80% of how much I will end up liking the story. But again, it is personal preference that makes me not like it.

I am really glad I found about this manga and read it!
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Flat and meaningless   
Rating: 7.0 / 10.0
by cherrykookie
June 17th, 2015, 12:58am
This manga definitely was an interesting first at least. It intrigued me from the start, had me reading on and had some great concepts.

Unfortunately, starting from the Nanako arc, it went downhill. The ending was rushed and fell flat. It failed to be meaningful from my perspective. The author throws a bunch of twisted "wtf" moments and overplays it in an attempt to be meaningful. Can fool those who are newer to this genre, but (sadly) it couldn't fool me.
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What did you learn?   
Rating: 9.9 / 10.0
by fovika
May 23rd, 2015, 5:53pm
Well now, that was an unexpected journey. I feel as though everyone should read this, no exceptions. It makes you think (as any psychological tagged story should). You get involved and you can't change the fact that this is one story that sticks to you.

The ending is not what I wanted, but not unwelcomed. The whole flow of the story is not really what I wanted, but not unwelcomed, if that makes any sense. Everything that happens is calculated and controlled by the mangaka. A very well made manga.
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Rating: 7.7 / 10.0
by butako chan
April 17th, 2015, 10:36pm
What a trip. Half the time I felt like I was tripping out on drugs. The concepts tackled within the manga are both so foreign and familiar at the same time. You feel like you can connect and follow the story, but not without some extrapolation and thinking on your part.

... Last updated on April 17th, 2015, 10:38pm
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5 volume to many   
Rating: 8.0 / 10.0
by kiriee
April 7th, 2015, 8:24pm
if you read 21th century boy you know what it mean, manga like this deal a lot with a past, so it kind of hard to drag it long because when they introduce someone new it just strange it was never mentioned before, it was suddenly popup sure you can force yourself to explain it, but that strange feeling will always linger.

Anyway it was good while it last, the ending was just okay I think it somewhat explain contradiction in the character expression/feeling, a bit fucked up if you mind. Definitely worth reading if you're into something unique.

... Last updated on April 7th, 2015, 8:25pm
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Something Else   
Rating: 8.0 / 10.0
by Karichan10
February 11th, 2014, 11:24pm
I was drawn into this manga and pulled all the way to the end. I don't know the meaning to it, but it was intense and fun and obnoxious. It was all sorts of feelings. I recommend it for anyone who needs something to keep their mind going. It is not something I will forget. Oh it really got me laughing and mumbling absurdly until the very end. I dare ya to try and read it all the way through... then let us know XD
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Kinda disappointed   
Rating: N/A
by gibble
October 19th, 2013, 11:43am
I agree with the last two users, especially Mizura, they pretty described exactly how I felt.

I loved it when I first read it. It was fresh and interesting. I also love how author displays raw emotions. However at the end of the day, there's really nothing else going for it. I don't care about any of the characters. I'm not saying anything is bad per se. To me, it went from AMAZING to just alright....and that by itself is the disappointment imo. It just felt like the author underutilized a rather fascinating concept. A pity really...
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Little to add   
Rating: 7.0 / 10.0
by Venatius
October 5th, 2013, 2:33am
By and large, reviewers like Mizura have this manga on the nose. There is, for those who may have sought it out based on category tags, one thing I would like to add: This truly is one of the relatively few cases where the direly overused "Psychological" category tag is in fact well and truly applicable. It seems people tend to use it for any manga where a character... thinks. In this case, it's actually a primary, focused theme (in fact, probably THE primary theme).
Anyway, my opinion may be a little more charitable, as I rather appreciated the use of really intense one-on-one interaction scenes as the primary drama and catalyst for plot, and the way it shucks the somewhat cliche direction the plot initially seems headed for. But ultimately, there's a lot of subjective fluff, head-up-own-backside "artiness" for its own sake, and wrist-tossing internal melodrama that kind of hampers that, even if it's still fairly intriguing. The story could easily have been shaved down to half its length with better pacing and less navel-gazing and lost no dramatic impact. It teeters on the verge of what I'd call pretentious, but that the same author gave us Ichi the Killer gives me a bit more faith they aren't completely up their own backside. If nothing else, it's a gutsy series unafraid of taking risks.

... Last updated on October 5th, 2013, 3:16am
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Excellent concept, but lacks real meaning   
Rating: N/A
by Mizura
September 14th, 2013, 10:11pm
The story's concept was extremely interesting, and the various situations were quite entertaining to behold, but I felt that the author ultimately went for the shock factor without much real psychological content. The series somehow ends too soon, with only a few "cases" in total, so you feel it doesn't really fully explore this otherwise extraordinary ability, and the "cases" that do get resolved are presented in a way that will shock you at first, but may make you feel "eh?" after thinking about it some more.

In the end I walked away without any real insight into the human condition, just a bunch of over-dramatized nutcases. If you don't read it for psychological insight though, this is an extremely novel manga with a level of shock-factor entertainment that you'll rarely find elsewhere.
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Rating: 10.0 / 10.0
by jojalee
July 19th, 2013, 5:11am
Homunculus is one of the most amazing manga's I have ever read. If you're into psychological manga this is for you. By an amazing mangaka, Homunculus is certainly one of my all time favourites.
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