Onani refers to masturbation. And this is something our protagonist excels at. Each day after school, he slips into the seldom-used girls' restroom on the third floor and indulges in his private act. That is, until one fateful day when he's discovered by a girl who has been bullied, harboring her own secret motives. This tale explores errors, redemption, and the myriad choices lying in between. It delves into both the darkest and brightest facets of human nature.

Onani Master Kurosawa
- Genre: comedy drama mature psychological romance school life seinen slice of life
- Author: ise katsura
- Artist(s): yoko
- Year: 2007
- Original Publisher: niwango
- Status: Complete
Associated Names
Masturbation Master Kurosawa
Onanie Master Kurosawa
Onanii Masutaa Kurosawa
Мастер вздрочки Куросава
हस्तमैथुन मास्टर कुरोसावा
オナニーマスター黒沢
Official Webtoon
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N/A
Groups Scanlating
Latest Release
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Hidoi~! Translators Chapter 21-22
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Emergency Exit Chapter Extra
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Emergency Exit Chapter 30v2 (end)
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Hidoi~! Translators Chapter 19-20
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Emergency Exit Chapter 28-29
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Emergency Exit Chapter 26-27
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Emergency Exit Chapter 24-25
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Emergency Exit Chapter 22-23
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Emergency Exit Chapter 20-21
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Emergency Exit Chapter 19
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Hidoi~! Translators Chapter 18
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Hidoi~! Translators Chapter 17
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Hidoi~! Translators Chapter 16
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Hidoi~! Translators Chapter 15
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Hidoi~! Translators Chapter 14
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Hidoi~! Translators Chapter 13
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Hidoi~! Translators Chapter 12
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Hidoi~! Translators Chapter 11
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Hidoi~! Translators Chapter 10
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Hidoi~! Translators Chapter 9
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Hidoi~! Translators Chapter 6
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Hidoi~! Translators Chapter 5
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Hidoi~! Translators Chapter 4
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Hidoi~! Translators Chapter 3
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Hidoi~! Translators Chapter 2
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Hidoi~! Translators Chapter 1

Umm.. well ^^; one thing I can say for certain is that this manga was intended for a male audience.
Initially, the theme of this manga may seem very inappropriate and disorderly, but after reading the entire manga, it kind of leads the reader to a new perspective on the manga and its theme/message.
Now, while I don’t think this manga was a masterpiece by any means, and it definitely had many flaws to its plot and story, I think there were many parts that I did find to appreciate. Quite similar to Aku no Hana as well in retrospect.
Honestly, I don’t think this manga would be much of an impact to the majority of the audience, but to growing up teenage males struggling with puberty and keeping up with the constant changes in life, I think this manga could give a new perspective on how to deal with such issues.
The author must have bully fetish which is having feeling for his bully and I don't even fucking understand this kind of masochist tendency.
If you haven't been a misadjusted loon at some point in your life, this isn't for you. If someone told me this is a CIA operation to mark potential future terrorists I'd almost believe it.
The protagonist is effectively a very extreme caricature of a teenage loner, getting pointlessly worked up in his own head, and then committing unsavory acts toward others (not described here, because they are kind of disturbing), starting with some misguided "justice" toward bullies, culminating in
Then he finally realizes he has been a jerk (pun intended),
So, the plot is not particularly original (once you ignore how extreme it is in certain elements), the protagonist goes from unlikable and insane to regular (nice) guy, which isn't exactly compelling. The other characters aren't one dimensional, but they don't have much depth either (the series is short and there is a lot of wasted time, so it would be hard to do much with them anyway).
At its core, it's just an unremarkable coming of age story, which meanders quite a bit before getting to the point, and doesn't give enough screentime to most of the supporting cast. Plus, you have to wade through some disgusting content early on to get there. I genuinely believe this would have been better with 90% less teen angst in it. It's a story that has been told before and better, and will likely be eclipsed in the future as well.
I don't think he's a master if get caught smh
Back in the day when we were kids, we read this series and got angry at
The manga relied heavily on time skips and frequently failed to convey character development through showing instead of telling; major examples are failling to build the chemistry between Takigawa and Nagaoka, the author expects the reader to fill the void of said development that supposedly happened during the 40-day summer vacation; it doesn't matter whether the author intended to withhold the information about their relationship for the sake of 'plot twist' reveal, it's still a lazy writing and forced, and cheap plot progression for the sake of shock value.
Another example is the author conveniently placing that two-dimensional bully tsundere bimbo; Sugawa, in a situation where she seeks help, and Kurosawa happens to be there at the right moment, and coincidentally with the girl with whom she arguably had the worst relationship, and what a coincidence that she broke up with her boyfriend who beat Kurosawa and being available at the right time. Yet people think it's cute and natural. I'll return later to talk about Sugawa.
The manga contains a number of contradictory double standard messages, such as the author comparing Kurosawa's situation to Kitahara's because both were bullied. Are we supposed to forget how Kurosawa was ostracised as a form of retaliation? And how several other students began to sympathise with Kurosawa and assisted him in overcoming bullying, such as by providing emotional support or cleaning up his desk. Yet we are expected to be proud of Kurosawa for overcoming his own adversity while pitying Kitahara for not adopting Kurosawa's mentality and perspective on bullying.
While the manga effectively depicted the negative consequences of child bullying, it failed to maintain a sense of authenticity; we have Kurosawa's friends who supported him, such as Nagaoka, Takigawa, Pizza-ta, and Kobayashi and Erika (who were both presented as the class leaders and mediators), that's nice and all, but they all did absolutely nothing for Kitahara! All they did was watch the girl being constantly hurt and abused, the only one who noticed this was Kurosawa, who also did nothing but preach to the victim, this is an outright double-standard and makes the entire cast hypocrite.
And now back to Sugawa and her minions, who were constantly bullying Kitahara to the point of worsening her social anxieties; skipping school and being shut-in, and developing suicidal tendencies, yet Sugawa and her group, like the rest of the class, did absolutely nothing to show remorse and responsibility by reaching out to Kitahara, visiting her house, and self-admitting to that they were fully responsible for the way she acts, yet we are supposed to disregard all of that with an off-screen apology and believe that they have matured. What happened to "show, don't tell"?
Would be surprised with the Male Lead Character Growth..
That 'one' moment changed the story from generic to awesome..
Really good and realistic manga, but the last volume invalidates everything that was being shown in three preceding volumes. The problem can be described in one sentence - The last arc is a NAIVE portrayal of aftermath of everything that has happened to that point (it's so clear, you'll definitely notice the precise moment when manga takes the turn for bizarre)