Onii-chan wa Oshimai!

Dex-chan lover
Joined
Apr 17, 2025
Messages
186
I love this manga!! some of it is a little weird (especially weird shippers T.T) but if you click off at every sorta-weird thing you'd literally never finish a single manga or anime LOL
 
Joined
Jun 3, 2025
Messages
1
wait, daily multivitamin, no, come back... i already developed a parasocial relationship with you... (⁠╥⁠﹏⁠╥⁠)
 
Active member
Joined
Aug 17, 2024
Messages
777
Is there incest here? If so, I'll stay away.
If so, I hope he at least doesn't turn back into a man in the end, it would be rotten. "A boy turns into a girl and wins a girl over, but in the end he turns back into a girl and... The girl still likes him because 'I don't love you for your sex, but for what you are to me'"... Ugh
 
Joined
Aug 5, 2025
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4
Cara, eu quando é que sai os novos capítulos traduzidos pro português?? Vão sair em lotes de novo ou serão postados por dia - levando em conta que já têm até em espanhol - ???
 
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Aug 5, 2025
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Cara, eu assisti o anime quando foi transmitido, porém, somente do mês passado pra cá me deu a curiosidade sobre o mangá e agora eu tô todo viadeinho esperando os novos capítulos em ptbr, apesar da vontade enorme de já ler em espanhol kk!!
 
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Aug 5, 2025
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Será que se eu postar muita coisa sobre onimai no TikTok ele ganha logo a segunda temporada? Kk. Tipo, é uma piada comigo mesmo pq, em 2021, voltei a assistir Ranma½ e em 2022 decidi postar quase em massa vídeos e fotos do anime no meu Facebook e TikTok, onde uma cambada descobriu a série, logo depois foi anunciado o remake de Urusei e uma piada totalmente aleatória sobre o Remake de Ranma que fiz no mesmo ano se concretizou milagrosamente em 2024 kk. Vou tentar, ter superstições sobre si mesmo é divertido.💕
 
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Aug 5, 2025
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Ps.: Nekotoufu cozinhou demais na cena da mãe do Mahiro!! ♥️♥️🔥🔥 Espero que até 2029 ou 2032 nós vejamos essa cena no anime.
 
Dex-chan lover
Joined
Feb 23, 2023
Messages
552
The skeezy pedo fetish material has always been present in this story, right from the beginning, and it's a damn shame, because the core premise is sound and could be used to explore some interesting themes "guyfailure gets a second childhood as a girl to learn to be a better, more fully rounded person, decides to commit to that new life and grows up into an adult woman"

But that is noooooot the path the author ultimately took, instead remaining in a perpetual slice of life comedy with occasional vile pedo-bait thrown in to hand out more tonal whiplash than a clown car crash.

The real tragedy is that this story could be something better, and that THIS is the version of that idea that persists for many chapters and enjoys strong popularity while much better versions of "my gender got bent so I'ma use that as a tool to explore Themes" are cancelled, ignored, or never even fantranslated, I sometimes hold out a vain hope that this story and its characters could quite literally grow up, more fool I.
 
Joined
May 9, 2024
Messages
3
It's been about 2 years since I last visited this manga, and it only has gotten worse, and my feelings stronger.

It's just slop. All of it. There's no story, no theme, no literary devices. This initially was a story about a dead-beat brother who neglected his family, so much so, his mad scientist sister literally has to drug him into becoming a girl (the author's sexist interpretation of) just so he would speak to her. This is actually a really good story, as through the body and experience of a young girl, he is suddenly exposed to how his selfishness and laziness strained his relationship with his sister. And through the experience of a female, he is able to feel everything she can feel, every article of uncomfortable clothing, every uncomfortable tampon, every uncomfortable position on the toilet, and every painful period cramp. Through this experience, he should've acknowledged his behavior, made up with his sister, and most importantly, move forward.

Unfortunately, this is not what happened, as the author is actively trying to make him female. This is impossible, as although he may have the physical body of a girl, he will still never be an actual girl; he will never have been born as a girl, grow up as a girl, and live as a genuine girl. Mahiro will always perceive the female body through the eyes of male lust, as Mahiro was born as a man, grew up as a man, and lived as a man. To suggest that gender can be interchangeable is sexist, as it disregards an individual's literal reality; as a woman I will never know what it is to be a man, as every waking second of my life I have lived as female.

As a result of this logical fallacy, the story falls apart. In order for Mahiro to become female, his entire past as a man has to be erased, and without his male past, Mahiro will never be able to completely own up to his prior behavior and rekindle his relationship with his sister. So, with no story, theme, or devices, this manga has just become "skeezy fetish material." The post above says it well, it's just a manga showing a middle schooler in boring and risqué states of dress and scenarios. God forbid this author ever gets a hold of Lolita, he might end up enjoying it.
 
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Dex-chan lover
Joined
Feb 23, 2023
Messages
552
It's been about 2 years since I last visited this manga, and it only has gotten worse, and my feelings stronger.

It's just slop. All of it. There's no story, no theme, no literary devices. This initially was a story about a dead-beat brother who neglected his family, so much so, his mad scientist sister literally has to drug him into becoming a girl (the author's sexist interpretation of) just so he would speak to her. This is actually a really good story, as through the body and experience of a young girl, he is suddenly exposed to how his selfishness and laziness strained his relationship with his sister. And through the experience of a female, he is able to feel everything she can feel, every article of uncomfortable clothing, every uncomfortable tampon, every uncomfortable position on the toilet, and every painful period cramp. Through this experience, he should've acknowledged his behavior, made up with his sister, and most importantly, move forward.

Unfortunately, this is not what happened, as the author is actively trying to make him female. This is impossible, as although he may have the physical body of a girl, he will still never be an actual girl; he will never have been born as a girl, grow up as a girl, and live as a genuine girl. Mahiro will always perceive the female body through the eyes of male lust, as Mahiro was born as a man, grew up as a man, and lived as a man. To suggest that gender can be interchangeable is sexist, as it disregards an individual's literal reality; as a woman I will never know what it is to be a man, as every waking second of my life I have lived as female.

As a result of this logical fallacy, the story falls apart. In order for Mahiro to become female, his entire past as a man has to be erased, and without his male past, Mahiro will never be able to completely own up to his prior behavior and rekindle his relationship with his sister. So, with no story, theme, or devices, this manga has just become "skeezy fetish material." The post above says it well, it's just a manga showing a middle schooler in boring and risqué states of dress and scenarios. God forbid this author ever gets a hold of Lolita, he might end up enjoying it.
I agree with a lot of this... however I will say that in a better written story, a trans reading of the character could have existed, whereby recognition that they were a shitty guy dovetails into "Well why am I so shitty at being a guy? maybe that's the wrong fit for me" the claim that Male Socialization precludes being a woman is... kinda standing in stark defiance to the existence of trans people, who go through socialization as one gender, and reject it to forge their own identity. Or indeed a range of other phenomena that prove being raised in a given way is not an ironclad determinant of your identity.

That clearly isn't what's going on here yes, we have a cis male character in a soft sci-fi genderbender story with plenty of squick, but some of your language is absolutist in a way that seems to suggest erasure of trans characters in both fiction and real life, and I don't believe that was your intent, but it maybe came across badly?
 
Joined
May 9, 2024
Messages
3
I agree with a lot of this... however I will say that in a better written story, a trans reading of the character could have existed, whereby recognition that they were a shitty guy dovetails into "Well why am I so shitty at being a guy? maybe that's the wrong fit for me" the claim that Male Socialization precludes being a woman is... kinda standing in stark defiance to the existence of trans people, who go through socialization as one gender, and reject it to forge their own identity. Or indeed a range of other phenomena that prove being raised in a given way is not an ironclad determinant of your identity.

That clearly isn't what's going on here yes, we have a cis male character in a soft sci-fi genderbender story with plenty of squick, but some of your language is absolutist in a way that seems to suggest erasure of trans characters in both fiction and real life, and I don't believe that was your intent, but it maybe came across badly?
This isn't a trans reading, this isn't any reading really. There's no story, no plot, no nothing, and as a result this lapses into a fetishized and sexist slice of life about how a 20-something-year-old is turned into a 13 year old girl with the mind of a man. It is physically impossible for Mahiro to become a girl, I've said it before, Mahiro was born as a man, grew up as a man, and lived as a man, and will never have been born as a girl, grow up as a girl, and live as a genuine girl. Though he may have the body of a genuine adolescent girl, he will always see that body through the eyes of male lust. He is a man forced into the body of an adolescent girl, which is an extremely weird fetish. The author will never understand what being a girl is like, but he still tries to show me, a woman, what being a "genuine girl" is like. While the initial chapters do show the author’s interpretation of what it is like to grow in the body of a girl, Mahiro will always have the prior experience of existing as a man which allows him to compare and contrast his experiences of growing up as an adolescent boy and an adolescent girl (which the male author has never experienced.) In order for Mahiro to truly become female, his entire existence would have to be erased, Mahiro would have to become a new human being, and if that were true, this manga wouldn't exist in the first place. This is the folly of trans identity-it is a paradox where the existence of oneself contradicts the existence of oneself.

Maybe if the author addressed or even went with this paradox, it would make for a compelling story. Perhaps his sister could’ve wanted a little sister, and finding that a man trapped on the body of a little girl isn’t genuine, she could’ve erased his entire identity and started anew, only to realize Mahiro, despite his shortcomings, was truly who she loved, and the sister spends the entire manga chasing some scientific way to restore his identity whilst dealing with the existential reality of having erased someone whom she loved. Maybe the new “Mahiro” could even discover (through snooping around or gradually uncovering belongings of the previous Mahiro) her entire existence was scientifically produced to appease her sister, and have an existential crisis of her own. That would be a genuinely deep and nuanced way of approaching this trans paradox, with the sister and brother learning to accept oneself.

This manga is just fetish slop, it's not a story of trans identity, it doesn’t even address anything trans related, it's simply a sexist interpretation of what the author wants a girl to be. As a literature student, I appreciate authors tacking this intricate subject, and I believe Inside Mari does a great job at highlighting my described paradox and how it utterly hinders ones, social, mental, and physical life.
 
Dex-chan lover
Joined
Feb 23, 2023
Messages
552
This isn't a trans reading, this isn't any reading really. There's no story, no plot, no nothing, and as a result this lapses into a fetishized and sexist slice of life about how a 20-something-year-old is turned into a 13 year old girl with the mind of a man. It is physically impossible for Mahiro to become a girl, I've said it before, Mahiro was born as a man, grew up as a man, and lived as a man, and will never have been born as a girl, grow up as a girl, and live as a genuine girl. Though he may have the body of a genuine adolescent girl, he will always see that body through the eyes of male lust. He is a man forced into the body of an adolescent girl, which is an extremely weird fetish. The author will never understand what being a girl is like, but he still tries to show me, a woman, what being a "genuine girl" is like. While the initial chapters do show the author’s interpretation of what it is like to grow in the body of a girl, Mahiro will always have the prior experience of existing as a man which allows him to compare and contrast his experiences of growing up as an adolescent boy and an adolescent girl (which the male author has never experienced.) In order for Mahiro to truly become female, his entire existence would have to be erased, Mahiro would have to become a new human being, and if that were true, this manga wouldn't exist in the first place. This is the folly of trans identity-it is a paradox where the existence of oneself contradicts the existence of oneself.

Maybe if the author addressed or even went with this paradox, it would make for a compelling story. Perhaps his sister could’ve wanted a little sister, and finding that a man trapped on the body of a little girl isn’t genuine, she could’ve erased his entire identity and started anew, only to realize Mahiro, despite his shortcomings, was truly who she loved, and the sister spends the entire manga chasing some scientific way to restore his identity whilst dealing with the existential reality of having erased someone whom she loved. Maybe the new “Mahiro” could even discover (through snooping around or gradually uncovering belongings of the previous Mahiro) her entire existence was scientifically produced to appease her sister, and have an existential crisis of her own. That would be a genuinely deep and nuanced way of approaching this trans paradox, with the sister and brother learning to accept oneself.

This manga is just fetish slop, it's not a story of trans identity, it doesn’t even address anything trans related, it's simply a sexist interpretation of what the author wants a girl to be. As a literature student, I appreciate authors tacking this intricate subject, and I believe Inside Mari does a great job at highlighting my described paradox and how it utterly hinders ones, social, mental, and physical life.
"this is the folly of trans identity" hooooold up. I know this story is slop and isn't about any of that, but thaaaat statement genuinely sounds like transphobia that I'm gonna need to discuss with you.

Let's set this story entirely aside for a moment, and discuss Trans people as a real phenomena that exists, because unless I am very much mistaken, you have some misconceptions that I would like to address.
 

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