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Koisuru Boukun   
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Related Series
Challengers (Adapted From)
Knockin' On Your Door (Side Story)
Koisuru Boukun Fanbook (Side Story)
Koisuru Boukun Artbook (Side Story)

Associated Names
Bokutachi no Shippai
Koi Suru Boukun
T-Love (French)
The Tyrant Falls In Love
The Tyrant Who Fall in Love
The Tyrant Who Falls in Love
Verliebter Tyrann
Zakochany tyran (Polish)
사랑하는 폭군

Groups Scanlating
Hinako Takanaga Fan Community
Shinmakoku Scanlations
yaoi daily

Latest Release(s)
v.3 c.2 by kudouusagi 7 days ago
v.3 c.1 by kudouusagi 14 days ago
v.15 c.4 by kudouusagi 2 months ago
Search for all releases of this series

in Country of Origin
14 Volumes (Ongoing)

Completely Scanlated?

Anime Start/End Chapter
Starts at Vol 1, Chap 1
Ends at Vol 1, Chap 5

User Reviews

2 topics, 12 posts
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User Rating
Average: 8.5 / 10.0 (1068 votes)
Bayesian Average: 8.44 / 10.0

Last Updated
May 26th 2024, 8:05pm



Category Recommendations





Original Publisher

Serialized In (magazine)
Gush (Kaiousha)

Licensed (in English)

English Publisher
Juné (11 Vols; Discontinued)

Activity Stats (vs. other series)
Weekly Pos #455 increased(+64)
Monthly Pos #970 increased(+159)
3 Month Pos #1330 (No change)
6 Month Pos #1328 decreased(-27)
Year Pos #1168 decreased(-136)

List Stats
On 2369 reading lists
On 565 wish lists
On 1073 completed lists
On 135 unfinished lists
On 694 custom lists

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over 9 years ago
over 15 years ago

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User Comments  [ Order by usefulness ]
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Give it a chance, it'll warm your heart.  
by kemeko
September 14th, 2023, 2:33pm
Rating: N/A
So, this manga is definitely a gem, and it's very popular for a reason. If you're able to get past the first volume, you're in for a ride. It's basically a manga about at toxic relationship where boundaries are crossed, verbal abuse, communication problems and more. Its not your typical yaoi where its kiss kiss fall in love. It's a slow romance.

Basically, the manga shows a lot of toxicity between the couple, which are real life issues, compared to other yaoi's where its like "oh r***, well i love you now."
Over the course of 20 years, the manga has developed amazingly, and the characters just blossom into these amazing people. Lots of comedy too, its hilarious. And also serious drama, and it highlights serious issues that are present in real life relationships. The characters learn about communication, learn about their wrongs, and learn about their problems. Also, some characters have traumatic pasts, and talks about homophobia and how they have fallen victims to it.
There are censored sex scenes, however, minimally censored. I will say, my favorite thing about this manga is that the sex scenes aren't gross. They feel romantic. They aren't hentai-esque, but still hot at the same time.
I WILL say, however, as much as I love this manga and its a solid 1000/10, the 2nd chapter of the first volume /is/ a tough read, and it is dub-con until i'd say maybe volume 4, maybe 3, depending on the scene.

In short, if you read this, expect just a toxic relationship between initial friends to lovers, one sided love, and a tsundere who can't admit that he really is in love with this guy, because he was never taught to express his feelings, and feels awkward around romance. Expect the most sweetest, sappiest, cutest scenes, and expect to see a total raging asshole turn into a soft and shy person, yet still holding his boundaries. Expect to laugh too! This series has me cracking up constantly.
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Okay, my turn  
by CrystalHopeDragon
January 24th, 2023, 11:47pm
Rating: 7.0  / 10.0
I just made an account to comment on this, because I think some people missed the point. This manga is…okay, actually, context first. I started reading this at 14, and for a young Asexual with hormonal issues and sexual confusion I thought this manga was phenomenal. It was horny and I loved it. Growing up? The shit I found as sexy back then is some of the creepiest bits of this manga now. But I think that might be a good thing.

People keep making Morinaga out to be the only bad person in this relationship. He’s not. They’re both terrible in the beginning. Shouichi knew Morinaga was gay long before the rape scene. If you remember, he was actively beating him up regularly because he was mad his little brother eloped with his boyfriend to California. He was taking his aggression out on Morinaga, but Morinaga put up with it because he thought Shouichi was amazing and loved him too much to resent him for it. Then Shouichi accidentally takes that drug when they were drinking, and yes, Morinaga rapes him. That is 100 percent fucked up and very much puts him in the wrong, but it doesn’t retroactively put Shouichi in the right for the stuff he pulled before. Also, Morinaga regrets it. He packs his belongings and leaves, intended to let Shouichi move on without him. Shouichi is the one that demanded he stayed, and yes, Morinaga uses that for emotional blackmail to get sex out of him, for which Shouichi regularly beats him up over. They are both TERRIBLE in the beginning. Shouichi is abusive and Morinaga is a rapist. And the first nine or so volumes of this manga are literally all about them learning boundaries.

I think that’s the point though. This relationship started from one of the (more realistic) worst possible starting points. One of them is an abusive homophobe, and the other is a rapist. Over the course of 14 volumes we watch Morinaga learn boundaries, learn to listen to his partner, learn to accept a fucking no in regards to sex sometimes. He learns why and when his senpai does or doesn’t want sex and he starts listening to it. He learns what Shouichi cares about and starts putting proper effort into seeing his desires become reality, while still wedging out the place he wants in his life. He’s grown a fuck ton. The same goes for Shouichi. In the beginning he couldn’t even stand the thought of gays. He kicked Morinaga around for being one despite considering him one of his only friends. He wouldn’t listen to anything Morinaga had to say about his life, and once they were in an (unhealthy) early relationship, refused to acknowledge any of Morinaga’s feelings. Over the course of the manga he has learned about the discrimination that lgbt+ have faced and become more open minded, learned to listen to his partner in regards to his experiences, and has actively started looking for what upsets him. They have both learned to express themselves better, but Shouichi has come leaps and bounds further in that department than Morinaga. And yes, I agree with a lot of people in the fact I think Shouichi is ace. I also think he’s a non sex-repulsed ace though, and the main reason he freaked out about the sex in the beginning is that it was RAPE. I’d freak out about that too.

The point is though, they’re not perfect. They weren’t portrayed to be perfect. This manga is the story of two jackasses learning to overcome their biases and listen to each other because they want the other in their lives more than they want to stay who they used to be. They grew and adapted because they cared about each other, and stopped doing the things that were unhealthy. As of volume 14, the rape has stopped. As has most of the physical abuse. They openly talk about their feelings and desires, and look out for each other. I think this manga is a really interesting look at two broken people figuring out how to make their lives work together, and it doesn’t get enough credit for that. Real relationships aren’t perfect, most people don’t fit together like a puzzle. These two definitely don’t. But they figured out how to make a nasty mess of a relationship into something supportive, and I think the journey there was fascinating.

Also, another fun bit to this manga is nothing is stagnate. In the beginning they’re both in the middle of their masters and doctorate respectively, but over the course of the manga Morinaga graduates with his Masters and decides to go into pharmaceuticals, while Shouichi finishes up his doctorate and starts teaching at the university they graduate from. Shouichi’s house burns down early in the manga at the same time Morinaga needed a new apartment, which results in them living together. Morinaga reconnects with his estranged brother while Shouichi gets over his tiff about his little brother eloping. There’s more to their lives and this manga then just their fucked up relationship becoming something stable. They have lives and families and real world concerns that affect each chapter. Morinaga went through a mental spiral about graduating because if he wanted to get a proper job that would result in a long distance relationship for them. And it does. And they work through that until he manages to get a transfer closer to home. Things that in reality would affect a relationship as someone ages actually happen to them, and they steadily figure out how to handle them. It’s honestly a interesting read.

Now, for anyone reading this who hasn’t actually read the manga, this really isn’t for everyone. There’s a shit ton of rape and unhealthy behavior in the first nine volumes. It’s portrayed semi-sexily, but Shouichi is very much displeased and takes in out on Morinaga afterwards. A sane person would stop hanging out with their rapist, but he is very fond of him for reasons the manga explains. If you can deal with the early unhealthy relationship though, I promise, it gets better. It takes (counts in head) three years or so of developing their relationship and learning healthly communication, but at the point I’m at the manga is downright wholesome. It’s a long journey to get there, but in this instance, I honestly think the journey was worth it.

... Last updated on January 25th, 2023, 12:09am
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This ain't it  
by jollychick
August 17th, 2022, 9:12pm
Rating: 1.0  / 10.0
I read through volume 8 but I can't take anymore. There's nothing funny or cute about forcing yourself on someone who has explicitly said, multiple times, that he isn't interested. I can/have read a lot of manga with questionable consent but this beyond anything I've seen. I actually feel odd writing this because I've never had this much dislike for a manga character, I've certainly never had a problem like this with any yaoi I've read so far. This wasn't the weak refusal that's often shown to be hesitance in manga like this, it's a total rejection on every level and still Souichi won't let it be. Because of this, I honestly don't like his character at all. Why should I root for the love of a man who raped someone he supposedly cares about? He reminds me of the mandatory 3rd wheel character, thrown in for jealousy, after the main pair gets together. Except in those cases, the rape doesn't actually take place.

Of course, everyone is free to read and enjoy whatever they want, but this manga isn't for me. Having said that, please don't act like you have some sort of heightened sense of understanding because you're okay with this, it's just a difference of opinion.
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Was funny untill I understood it's toxic  
by Mleczarz
April 30th, 2022, 1:38pm
Rating: 10.0  / 10.0
At first, I found it really funny, but every volume repeats the exact same scheme. Tatsumi is so damn dumb, even though he's a genius. Simultaneously, Morinaga keeps crossing Tatsumi's boundaries, makes promises and breaks them right after. And Tatsumi keeps using violence against Morinaga. It used to be funny, but now I'd love to see in 13th volume that Tatsumi finally stops acting like a victim of sexual abuse, since he loves Morinaga and want things Morinaga does to him. And Morinaga really respects Tatsumi's boundaries since he loves Tatsumi... That would be great if after really harsh beginning of the relationship, they finally understood each other and well GREW UP as both people and couple

... Last updated on April 30th, 2022, 1:47pm
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Too long, gets problematic  
by mrs_choco
January 14th, 2022, 10:18am
Rating: 5.0  / 10.0
As many others pointed out, this series gets problematic as it gets longer.
When I first read it, I loved it, especially for the beautiful graphisms from Takanaga-sensei (I really loved Challengers and Little Butterfly), I gave it a 9, even.
But I as re-read it recently and got up to date, I cringe as Morinaga is actually a dangerous predatory bully who stops at nothing to rape Souichi, dismissing explicit 'no', blackmail, etc.
As this story drags on without any sign of Morinaga making amends, I feel like vomiting.
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Among baby's first yaoi mangas, hits different years later  
by sweetdevil
August 4th, 2021, 4:13pm
Rating: N/A
The premise and execution of this manga are very off-putting to me now compared to years ago when I read it as a teen (back then I thought it was good even!): what looks like an asexual guy being raped and bullied — nay, outright blackmailed! — into a relationship by a needy, self-centered, mopey gay who can't control himself (which is a very bad look). From Souichi's perspective, he's being pursued by a guy who can't take his "no" for an answer and constantly tries to tell him how he feels. Because a gay guy assaulting a homophobe who's not interested in sex is passed off as romantic. Yikes.

Ironically, Morinaga's lack of self control and empathy justifies Souichi's stereotyping of gays as predatory and dangerous. Morinaga doesn't really care about Souichi's well-being or wishes, only about getting what he wants; if only Souichi could see how much of a nice guy Morinaga is!
I've read so much BL to know that consent is a gray area a lot of the time, but's really not. At all.

Everything goes round in circles: Souichi distances himself from Morinaga for some reason, Morinaga pines after him and finally cracks, leading to the very dubcon sex scene at the end of the volume, with Souichi looking like he accepts Morinaga a tiny bit more. Rinse and repeat for literally every volume after the first. The plot of every volume hinges on Souichi rejecting Morinaga and Morinaga forcing himself on Souichi to convince Souichi that he's actually gay and in love with Morinaga.

The art is mediocre to decent. I'd compare it to Naoko Takeuchi's sketchy, outlines-not-connecting style.
Dunno if I'll ever continue it, the point I left off (volume 8) seems like an acceptable (if open) ending.

ETA: weizhan's comment misses the point of the criticism people have of this story. No, Koisuru Boukun is not a deep, biting commentary on how women are treated in Japanese society (having Souichi be a stand-in for the woman, in this case). In the first sex scene, Souichi is drunk, drugged, can barely move, and explicitly voices that he does not consent to sex; Morinaga, as the more sober party, sees this as an opportunity to have sex with Souichi. They are the main couple and Morinaga is the protagonist, and the story is written in a way that encourages the reader to root for Morinaga and want him to keep pushing Souichi to "wake up" and realize that he's actually gay and in love with him!

There are plenty of BL works that pass rape off as no big deal, inadvertently painting gay men as predatory because they relentlessly pursue their uninterested love interests despite rejection, and Koisuru Boukun is one of them, as much as the people who like it don't want to admit it.

... Last updated on August 5th, 2021, 3:17am
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Really good! But the first 5 volumes didn't do it justice  
by Sunfae
November 20th, 2020, 3:45am
Rating: 8.0  / 10.0
Where should I start. This manga actually started to be enjoyable for me by volume 6 or let's say by volume 5, it was as if there was an awakening or something and the author changed the writing style almost completely.

The first volumes make the negative ratings and reviews kinda understandable, I myself thought of dropping it so many times at first. The author kept dragging the whole tsundere/forceful sex/rejection story and it was stretched to the moon, which made the first 5 volumes repetitive and frustrating. Moreover, the fact that there was rarely any pov from Tatsumi's side in the first volumes that can show his thoughts & feelings, made the whole relationship at first quite disturbing and confusing but when we started seeing things from Tatsumi's point of view later on (after volume 5) everything was clarified and we understood why he was allowing that kind of forceful relationship at first.

Maybe to prepare the future readers and make the first 5 volumes understandable, "Abuse" should be added to the categories/tags of this manga, because at first there was assault and there was abuse from both sides actually, as in my opinion, Morinaga was emotionally abused by Tatsumi but then again if there was any point of views from Tatsumi's side at first (like later on in the manga) I could've made sense a bit of what was happening.

Also this manga had so much potential of being a psychological one, both the characters and the whole relationship is very complex but even though it got way better later on, I think it could've been deeper.

As a conclusion, future readers give this manga a chance as it's really a good story and this relationship is very unique, just be patient for the first few volumes.

Also a general advice to readers, not all stories are meant to be lovey-dovey and respectful, there are abusive relationships and bad starts to relationships happening in real life, hence the tag "slice of life", but I acknowledge that it seemed as if the author tried to romanticize what was happening in the beginning, which was a mistake, maybe the author left it to the reader to put a label on the situation at first, but nonetheless I think adding an "Abuse" tag might correct/explain that a bit, and again for me, everything made sense later on in the manga.

At the end, I can say that I liked and enjoyed this story a lot (starting from volume 5 onward), It certainly does not deserve the low ratings at all. Future readers, just give it some time and read it all, you won't regret it.

... Last updated on November 20th, 2020, 3:45am
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Does anyone actually understand the BL genre?  
by weizhan
September 2nd, 2020, 5:24pm
Rating: 10.0  / 10.0
So, I'm going to sound so passive aggressive right now, but I actually disagree with the majority of the comments that are lowering the rating of Koisuru Boukun because of the non-con/rape themes. I think that there are a few things that are totally excluded from the discussion here: first of all, the perspective of the readers. We - I am assuming - are mostly from Western backgrounds. I personally am from Australia, and can I just say that we have extreme censorship, and have previously been at risk of paedophilia charges from simply reading these kinds of texts. Topics like non-con and rape, regardless of how they are explored are constantly seen in a negative light: especially without context for the writing itself. This leads me to the second point: yaoi/BL/shounen ai are a genre that originated in the 1950s-70s in Japan as a response to the FEMINIST SEXUAL EMANCIPATION MOVEMENT, this genre is a response to conventional porn (aimed at satisfying the male gaze) and a conceptual exploration of femininity. The "male" characters in these texts function more as a "third-sex" so to speak; they embody and represent - dare I be so bold - the 'feminine condition', and remove that barrier of 2-dimensional female characters in texts; replacing them with these obscure male characters that do not conform to male stereotypes or the conventional form of masculinity. This comments are not unsupported: I would recommend that all of you actually review the historical significance of the text you are "slandering" or at the very least writing "libellous" falsities about.

This leads me to an actual interaction with the text: of course non-con and rape are displeasing (actually revolting) to read about, but in my opinion the author does not write about such concepts in a positive manner. Quite the contrary: I think that she is actually using Souchii as essentially a 'medium'. I mean, how many women are subject to this kind of revolting conduct: we are constantly pressured into sexual favours by men, forcefully or otherwise. The author does not romanticise the conduct, rather she - in tandem with a character conflict plot centre - actually delves into the taboo as a feature of the BL genre. Of course, that appears to turn this text into something of scholarship, which personally I think is ludicrous. It's a lighthearted comic full of comedic exchanges, non-conventional romance and - though it displeases me to phrase it this way - BL tropes (including, but not limited to, non-con and rape themes).

All I am requesting is that before deeming this text to be a romanticism/endorsement of sexual assault (a very bold statement to be making a may add) please consider that society requires discussion and exploration of taboo topics, simply burying or avoiding something does not stop it from existing. Gosh, I've gotten terribly serious here, but I really do feel that the author needs to be defended. It's this kind of thinking that results in blanket repression that damages creativity and thought patterns.

So, please, read the series in context with the genre. And stop beating up a text you obviously don't understand.
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'Oh no, I raped you bUT I love you, accept me because I said I love you and oh poor me and my feelings'  
by murichan
December 30th, 2019, 12:50pm
Rating: N/A
The first time I read this I was 14, and I loved it.
I loved every story Hinako had, and loved Morinaga(seme).
And now 9 years later, the 23 y/o me felt disgusting reading this.

Every sex scene is a big NOPE,

It doesnt have any character grow, as in 'huh, maybe this relationship is a bit toxit, lets talk about it',

is always the uke's fault for being careless 😕? AND THE FUCKING BLACKMAIL PART AND THAT 'ONCE A WEEK' AGREEMENT, ARE YOU SERIOUS??

what the fuck. making rape something romantic like 😕😕
and I get why Souchii is always screaming and confuse, because my friend, its like Stockholm Syndrom, kinda.
its so annoying. I read other works from her and only 3 of them doesnt have this initial:
'Oh no, I raped you bUT I love you, accept me because I said I love you and oh poor me and my feelings'

Of course a 14 y/o horny girl would love this, wow so much lemon, its like the famous usagixmisaki situation wow so much porn. I hope kids these days know that is not this is not OK.
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Love it  
by Rinshi7
July 5th, 2018, 11:32am
Rating: 10.0  / 10.0
I enjoy this series so long ago and now to find out that?s it?s still ongoing excites me. I love hinako works and this one is my favorite. The comedy is great. The story is fun and charming. The characters are fun and full of live. If you get understand and get past vol 1 then the rest you?ll enjoy.
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