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Oboreru Knife  
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A beautiful and mature sixth grade girl from Tokyo suddenly has to move out to the country side of Japan with her family. The girl, Natsume, then meets a boy and from then on she begins to feel 'something' in her body, like a surging wave.

Official English Translation


Related Series

Associated Names
Drowning Knife
Drowning Love
Oboreru Naifu
Shattered Knife
The Knife That Dropped in Water
À fleur de peau
السكين الغارقة
물에 빠진 나이프

Groups Scanlating

Latest Release(s)
v.12 c.45 by Evil Flowers & ShoujoHearts about 1 month ago
v.12 c.44 by Evil Flowers & ShoujoHearts 2 months ago
v.11 c.43 by Evil Flowers & ShoujoHearts 4 months ago
Search for all releases of this series

in Country of Origin
17 Volumes (Complete)

Completely Scanlated?

Anime Start/End Chapter

User Reviews


User Rating
Average: 8.5 / 10.0 (313 votes)
Bayesian Average: 8.32 / 10.0

Last Updated
October 11th 2021, 12:42pm PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Bessatsu Friend (Kodansha)

Licensed (in English)

English Publisher
Azuki (digital)
Kodansha USA (17 Vols - Complete; digital)

Activity Stats (vs. other series)
Weekly Pos #440 increased(+207)
Monthly Pos #1053 decreased(-119)
3 Month Pos #1256 increased(+234)
6 Month Pos #1494 increased(+157)
Year Pos #1723 decreased(-122)

List Stats
On 1226 reading lists
On 1056 wish lists
On 180 completed lists
On 75 unfinished lists
On 467 custom lists

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User Comments  [ Order by usefulness ]
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Man, this story is frustrating...  
by moonmystery
July 13th, 2020, 5:42pm
Rating: 7.0 / 10.0
I think I'm getting too old for this teenage angst stuff. It used to seem so cute and romantic, like the "epitome of teenage years"..... but man, seeing her deal with her PTSD is just rough.... these kids are too young to figure it out on their own, and end up lashing out at each other... If only they had accessible therapy...

... Last updated on July 13th, 2020, 5:44pm
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Strong start, left something to be desired...  
by MermaidAiera
September 28th, 2018, 11:57pm
Rating: 8.0 / 10.0
The artwork in this series is what I enjoyed the most. The eyes are so expressive while at the same time suggesting a deep intensity of sorts. In this sense, I would have loved to see the modeling/acting career take a front seat to it all, just for the sheer satisfaction of seeing so much artistic expression.

That aside, the story line started out with a lot of potential, and Kou & Natsume's relationship offered a lot of room for growth, character development, and intense moments. However, the author threw so many wrenches into the plot that things fell off kilter quickly. This choice wasn't necessarily bad however, because it added another realistic perspective to going through tragedy and navigating life when things don't go as planned. Asakura's portrayal of grief, trauma, and emotional scarring emphasizes the difficulty of the healing process. Characters in the story lash out, fall into themselves, feel unworthy, and are unable to cope. On one hand, this is all quite real, accurate, and 100% possible if people don't get/seek help in dealing with trauma. But on the other hand, this manga really misses a chance to develop it's characters, and it really leaves the reader frustrated and let down over and over again.

The most disappointing aspect of this manga is the missed opportunity to delve deeper into what it means to start life over when all seems lost. Just when it seems like there's an opportunity for the characters to grow/become more dimensional, they instead show no initiative to be better or move forward, and efforts from other characters to facilitate healing always fall flat. After a while the story began to feel tepid and stagnant. There is never time given to properly exploring Kou's psychological background and reasoning for his actions, though at times it is implied. Natsume's trauma plays out again and again, yet is sadly never remedied in a healthy way, and is actually severely triggering. The other characters remain one-dimensional, and their attempts to affect the plot are half-hearted and feel like a waste of time.

This story line is of course a reasonable and REALISTIC way things could play out in real life, which in it's own way is refreshing, yet heart wrenching. It kept me turning the pages, hoping that on the next one there would be some headway made. The consistency of the tragedy leaves readers mired in the story, clinging desperately to moments of joy while falling back, almost as familiarly as the characters do, into the dark pit of depression that holds them in a vice-like grip.

Overall, the story is worth a read. Despite the fact that it falls short in many ways, some of those ways are definitely my opinion and not hard facts. Asakura avoids the common cliches and brings to the table a raw and refreshing look at real life struggles and feelings, and tells a story that gets readers emotionally involved and painfully moved. Top it off with hauntingly beautiful and unique artwork, Oboreru Knife is a mature story with serious themes that stands apart from much of the lighthearted drivel that the manga world is rife with.
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Started off good but went downhill  
by kira6
September 22nd, 2017, 7:00pm
Rating: N/A
I remember reading this and liking the beginning, so I came back to finish up the series but god did it go downhill.

Spoiler (mouse over to view)
Natsume truly attempts to move on from being nearly raped, but Kou does not. At first we are led to believe that Kou left Natsume for "her own good." He was unable to protect her from the rapist, so he willingly gets out of the picture. He leaves Natsume so Natsume can find happiness with Otomo, who is the “nice guy.”

Ok, he gets into fights, he’s rude, he’s selfish, he’s turning into the stereotypical “bad boy.” But I still think he’s a good guy, trying to do what he thinks is right in a frustrating way. And the author was clearly letting us know that Natsume and Kou would get back together. When it happened, I thought I would be ecstatic. I shipped them. There was no way anything could go wrong. But yes, yes it did.

After the rape incident, Kou had no redeeming qualities about him whatsoever. And believe me, I LOOKED. I WANTED to find a redeeming quality about him. But all I found was reasons for Natsume to avoid him with a 10 foot pole. Just a few: he baited his brother into being beat up in his place, he pimped out a girl that liked him, forcefully kissed his brother’s girlfriend in front of Natsume to get back at her (and afterwards the brother slapped the girlfriend?????), and we haven’t gotten to the worst one yet folks. I still kept reading, hoping for a redeeming change before they inevitably got back together.

But here we go folks, the way they get back together. Kou basically blackmails, hits, and rapes Natsume. Repeating the first traumatic incident a second time. The author literally draws a superimposition of the old rapist on Kou since Natsume sees him as the old rapist. But then she opens her eyes and goes “Oh, it’s Kou.” She accepts it, because “he, too, was unable to move on” or something. Basically, she can't help but go back to “save" her violent, abusive, first love who showed no redeeming qualities whatsoever after they split. This all happens while she’s with still with Otomo, so she goes to break it off with him out of guilt.

I truly had high hopes for this manga when I started reading so long ago. But I can’t bring myself to read past this second rape. Apparently Kou turns sweet later on, and him and Natsume end up happily ever after. But does that negate what he did?

... Last updated on September 22nd, 2017, 7:10pm
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by cecropiamoth
February 19th, 2017, 6:53pm
Rating: N/A
Just a couple of chapters make clear that this manga is going to give us a positively thrilling picture of how sexual desire feels to a girl who's never really felt it before. This is going to be a winner!
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It's great  
by bossmama
July 17th, 2016, 10:35am
Rating: N/A
But I want to address some things here
Spoiler (mouse over to view)
I feel like Kou's character overshadowed Natsume's. As a character he is more intense, layered, and fascinating. Natsume is a strong female lead, she also has her own share of traumas and burdens, but I guess she's just a more realistic character than Kou.
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Captivating and Powerful  
by tamamomaru
February 12th, 2015, 8:49pm
Rating: 9.7 / 10.0
There's something unsettling about Asakura's style here that is both lewd and elegant. Those eyes! Art style itself gave me guilty pleasure as I read this series in one sitting. There's so much more to this story than the usual web of tumultuous love between utterly flawed personalities. There are bigger topics that are tackled here that you wouldn't find in a mainstream shoujo. Children in a crumbled society with failed adults, a premature death of innocence, rampant with corruption and absent of love-- All dark and gripping. At times I thought "No! It's too much." Yet, it knew I needed more.
I thought I had issues with the character's ages at first, but the world they're wrapped up in is so believable that the way they behave makes so much sense, I'm vicariously nodding at ever dramatic turning point. Not to mention that world! Interweaving folklore, old money, and adolescent angst in a small country town governed by the sea and it's superstitions. Sound like a mishmash of genres? Maybe as I have described it, yes, but it's all there and all complementary to one another in order to deliver the unique tone of this well crafted story.
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Loved it until  
by skatergirlyui
December 1st, 2014, 9:04am
Rating: 7.0 / 10.0
Gave it a 9 until the 50s where it ended up turning into the cliche type of shoujo where
Spoiler (mouse over to view)
The girl is finally properly dating the nice guy, tries to confront the bad boy, gets threatened into hanging out with him, gets abused, breaks up with the nice guy out of guilt, and finally gets together with the abusive guy. Who of course suddenly turns sweet a few chapters later.

So much wasted potential
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One of the best...  
by fufufuyen
September 14th, 2014, 2:14am
Rating: 10.0 / 10.0
I've only read up to Chapter 32, but this manga is amazing. The drawings and story were kind of lagging at the beginning, but as the story progressed, I really began to appreciate the art style. It's not lacking in skill - it is just a little grotesque, sort of. It shows expressions so well even though Natsume and Kou and Ootomo can be such indifferent characters. It's dark, brutal, yet charming and endearing. I love Kou the way Natsume does - I almost feel sucked in by his presence. There is just something about him that you can't put your hand on - "a blazing fire."

The story is also set around pulling at your heartstrings and writing things that normally you wouldn't want to see. In times where we hate the cliche happy endings, this manga really pushes the limits of that desire to see something "different." So many times, we are faced with disappointed in a bittersweet way.

Spoiler (mouse over to view)
You'd want to see Natsume saved. You'd want to see Kou show a flaw, but not in that way. I loved the idea of Kou being invincible, that it was "his land," that he had a god-like power that could sway and move anybody. This story started out as a typical model-girl story, but with her being thrown into a hickish town, everything changed. Kou is practically the embodiment of nature and life itself, and she is drawn to that. Risk-taking, fearlessness, and most of all - a purposeless passion. Kou moves her for no good reason, he brings about feelings she has never experienced - and she calls it "love."

As another person commented, I love how the story progresses through the character's life from since they were little. It's almost like Oyasumi Punpun in that respect as basically a coming of age story. I love their childish responses to their feelings and even danger. They are impulsive, they hate easily, they are violent...I feel like the mangaka captures the feeling of uncertainty and fleetingness so well, and the idea of centering the story around that is just profound. Even down to the jagged and faded lines of the drawings, this manga embodies and speaks a great deal of sense on the matters of passion and the inevitable.

Spoiler (mouse over to view)
Kou is transient, mysterious - one moment he is there, he is interested; the other he is gone and practically dead to you. It's a strange yet endearing character flaw/trait.

I'm so hyped about this manga that I may start to read chapter summaries...
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Quite profound  
by YukikoKudo
July 15th, 2014, 9:11pm
Rating: N/A
I picked this manga up, expecting to drop it after 10 or so chapters when I got bored of some crybaby heroine chasing after her prince. Superficially, that's what the manga seemed like in the beginning. But as you read on, things start weaving together bit by bit like a tapestry. At first, the story is told through Natsume, but then you begin to see other perspectives like Hana, Ootomo, and it really adds to the overall understanding of the plot and the attachment you feel towards the various characters.

Throughout the story, the characters change both physically and mentally. Most shoujo mangas people only 'grow' in terms of their relationships to one another, and rarely do they portray characters evolving and being changed by their experiences. With this, I felt like I was watching the characters evolve from kids to adults. Despite being shoujo, the topics are quite dark and profound.

The art is pretty good in general, but I'm not a fan of characters blushing on every panel. The story is really what convinces me to continue reading.

Comments that may contain spoilers up to Volume 14 below:
Spoiler (mouse over to view)
I hated Kyou as a character for the longest time. I generally dislike characters that fight for the sake of fighting, and was never able to empathize with him after the incident. His character deteriorated from being the center of Natsume's life, to this annoying pest that would show up once in awhile and bother her. I cheered for Ootomo all the way, hoping that she would stay as far away from Kyou as possible. When Ootomo and Kyou were together, I just kept wishing that Kyou wouldn't come and destroy it. But... later on, Kyou is gradually redeeming himself. As more of his backstory comes to light, his character is growing on me. Not quite a Natsume Kyou shipper yet... but we'll see how things progress.

// Update after Volume 14:
After Kyou practically rapes Natsume... I hate his guts.

... Last updated on July 15th, 2014, 10:08pm
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by ChildofSecrets
July 24th, 2013, 11:51pm
Rating: 9.0 / 10.0
This is the kind of story that simply captivates you. It's rich in emotional and situational tension and shines brilliantly in story telling and character portrayal. But what this story does that is so unlike most stories - is that it has this unusual power to overwhelm you. To give you this deep, but modest understanding of youth in all it's shameless glory.

What do I mean by that? It's all those powerful feelings - the elation, the disappointment, the anticipation, and that familiar dreamy longing for time to stand still, to live in seemingly perfect moments. If you've ever been an over-idealistic dreamer in your youth you'll be easily wowed by this as I am.

But apart from my abstract/personal thoughts: It's a great dramatic romancey slice-of-life sort of manga. Natsume is a strong character, but understandably weak too. We hear all her thoughts and watch as time and situations change her perspective of things. And I love the romance. I like that her relationship isn't smooth, but rather unstable and realistic. Her relationships between the main characters are a bit unpredictable (boys and girls alike).

Read it and be taken by it.

... Last updated on July 24th, 2013, 11:57pm
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