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Koroshiya 1   
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In Shinjuku Kabuki-Cho, the biggest sin town in Japan, there are two crazy guys. Ichi is a coward and a wimp, but once he breaks into tears, he turns into a human weapon. With great martial arts skill and a blade hidden in his boots, he butchers a bunch of enemies into mincemeat in the blink of an eye. His arch enemy is Kakihara, a yakuza boss who's tired of everything, including himself. Only when he pierces, cuts, and burns his own and other people's bodies does he feel that he is alive.


Related Series
1 (Prequel)

Associated Names
Ichi the Killer
Koroshiya Ichi

Groups Scanlating

Latest Release(s)
v.1-10 by Hawks over 18 years ago
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in Country of Origin
10 Volumes (Complete)
5 Volumes Bunko (Complete)
5 Volumes (Reprint, 2015, Complete)

Completely Scanlated?

Anime Start/End Chapter

User Reviews
Ichi the Killer by xombiemonkey
Koroshiya Ichi by friedo.obrain

4 topics, 13 posts
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User Rating
Average: 7.9 / 10.0 (613 votes)
Bayesian Average: 7.83 / 10.0

Last Updated
November 7th 2022, 4:10am



Category Recommendations





Original Publisher

Serialized In (magazine)
Young Sunday (Shogakukan)

Licensed (in English)

English Publisher

Activity Stats (vs. other series)
Weekly Pos #846 increased(+28)
Monthly Pos #1777 increased(+101)
3 Month Pos #2937 increased(+28)
6 Month Pos #3376 increased(+575)
Year Pos #4360 decreased(-70)

List Stats
On 350 reading lists
On 716 wish lists
On 1647 completed lists
On 38 unfinished lists
On 257 custom lists

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over 11 years ago
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User Comments  [ Order by usefulness ]
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This manga knows no boundaries  
by WorldendDesignator
November 15th, 2022, 2:47pm
Rating: 7.0  / 10.0
and that's the main draw of it. Koroshiya 1 makes crossing lines a sport, the sheer degeneracy of the violence in this work is damn near unparalleled and somehow it gets so absurd at times you'll end up laughing even though you're looking at a pile of slaughtered, defiled bodies. You almost feel guilty for reading. Sadly, the psychological element falls completely flat. The characters will often go on nonsensical rants that just make them look even more out of their mind but maybe that's the point of it. I recommend not to approach this as a psychological character study or a thriller and more treat it as a pitch black comedy.
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by hkanz
July 10th, 2017, 7:23pm
Rating: 8.0  / 10.0
I love Ichi as a character so I wanted to like this manga more than I actually did. Ultimately I felt the plot was pretty weak, Kakihara's character imploded in the last few volumes, Kaneko's existence was ultimately meaningless, and we were never given a truly believable motivation for Jii-san's actions. I'm still giving it an 8 due to Ichi and some great moments.
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by Akiradesu
August 4th, 2015, 1:05pm
Rating: 10.0  / 10.0
Spoiler (mouse over to view)
That panel when Ichi chases naked Hakiwara...
Spoiler (mouse over to view)
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interesting and awesome  
by whitespade
October 27th, 2012, 2:44pm
Rating: 9.3  / 10.0
it is a very long time until i nerve myself up to read this manga. i always want to read a manga with a hero that is not too kind/good/perfect ect, i want someone on the bad side of life. but when i started out, i cannot bring myself to read something with a lot of torture scene so i left this alone for a year or two to amass more experience.

and dang i am glad i read this after loads of other manga. i can now fully immersed myself in their story without getting squicked out, getting to know the characters and their perversion, i even find their love story so funny i really laugh out loud. kakihara is really one of a kind, his Cheshire smile is a sign some nasty shit is about to get down. ichi has quite funny personality, and his 'smile' is so ugly to look at it tickle my disgust and funny bone at the same time. the old guy is quite good too, i like thinking and manipulative characters like that. i wish a sequel for this with the new boy, i want to know what else do this guy will do to amuse himself.

this is recommended, but only after you experienced some of the darker side of manga. it wont do if you read manga for 10years but only shoujo. and well, this isnt even as horrifying as a cum-eating protagonist in homunculus, at least you can accept this conventional S&M couple.
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by Thangpro23
October 5th, 2012, 5:45am
Rating: 8.0  / 10.0
The manga was cool i thjink , it has it moment of twisted and sick shit that i had never dream of . The character are bunch of sick fuck which it make me amuse in a weird way , Sadly the story of the story could have been better , but ..the ending ,it like the author is trolling me or some thing .
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it will keep you turning the pages.  
by SAimNE
April 16th, 2012, 4:30am
Rating: 8.5  / 10.0
The plot isn't insanely deep l, but it is there. On the other hand the characters are one of a kind.... and that's a good thing for the world. If you EVER ran into someone like these guys in rly.... well I was going to suggest running but honestly that would probably be useless. Death upon death upon agonizing death, along with some rape, and a whole population psychiatric care facility running amuck is basically what you're looking at. Don't read this for any bit of happiness... I'd say it goes frwom bad to worse, but I think it basically idles in the worst possible the entire way through. Also don't even hope for a shred of humanity, dignity, or sanity among the protags or antags.
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for strong stomach  
by Imou
March 12th, 2012, 4:35pm
Rating: 7.0  / 10.0
this story has a really nice plot, but the extreme detailed graphics of torture and such kinda disgusted me. I had to stop reading after nearly every 5 pages...
If you like gore and the likes, then this is for you. Don't read it if you're a sensitive person; because once you do, you will be intrigued by the plot and won't be able to leave the manga alone, even if you really want to. This is what has happened to me.
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Well, this is one sick manga  
by wuhugm
January 25th, 2011, 9:54am
Rating: N/A
To sum it up this manga is about a manboy who is retarded and bullied and pervert goes killing people

U know, a manga is like a mirror to the mind of it's creator, not in the general theme, but in that insignificant details and characters' thought

And I can say that the creator of this manga is one sick messed-up beach boy

But the thing bothers me so much is how can 1 slice people in half and door locks with that tiny blade. U can give a cut with that blade but not slicing people in two and especially not cut metal locks!
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An Exploration of the SnM Mindset with Psychos  
by Voidmancer
April 10th, 2010, 2:29am
Rating: 10.0  / 10.0
I understand how people can hate this series while others totally love it as well. Upon reading it, I don't know if I want to throw up while reading this or start laughing my head off, but this is really good. There is so much explicit material such as violence (which borders on mindless) and sex (primarily on the topic of SnM applied to males).

The ideas portrayed in this manga do have some depth, although they aren't thoroughly explored which is all too good because the pacing of this manga is just too fast for slow scenes to mull over ideas but it's also not too hasty. There is a linear storyline, which is really not for anyone who doesn't enjoy an ending where everything is peachy at the end. Lastly, the characters all have some psychological condition that's quite not normal. Everything about this manga just makes it real good.

If you're looking for a unique, unapologetic read, this one would not fail to disappoint. Just don't read it while eating. smile

... Last updated on April 10th, 2010, 2:31am
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Yup, it sucks!  
by Fuuma_lady
November 25th, 2009, 1:56am
Rating: 1.0  / 10.0
Full of S&M and psychos and rapists and whores and insane beings. I'm not allergic with violence or anything, but this manga just goes berserk without any proper meaning or philosophy. Well, if you're just interesting in mere endless fighting and raping and sicking, it may suit your taste.
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