Oniichan wa Oshimai!


Onimai: I'm Now Your Sister!

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Alternative Titles

Synonyms: Onimai, Onii-chan is Done For
Japanese: お兄ちゃんはおしまい!
English: Onimai: I'm Now Your Sister!
More titles

Information

Type: TV
Episodes: 12
Status: Finished Airing
Aired: Jan 5, 2023 to Mar 23, 2023
Premiered: Winter 2023
Broadcast: Thursdays at 23:30 (JST)
Licensors: None found, add some
Studios: Studio Bind
Source: Manga
Genre: ComedyComedy
Themes: CGDCTCGDCT, Magical Sex ShiftMagical Sex Shift, SchoolSchool
Demographic: ShounenShounen
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older

Statistics

Score: 7.661 (scored by 7775277,752 users)
1 indicates a weighted score.
Ranked: #13712
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #1517
Members: 164,001
Favorites: 2,325

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Filtered Results: 110 / 130
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Preliminary Spoiler
Mar 23, 2023
Like many, I was impressed with the debut of Studio Bind and their highly-anticipated, highly-praised, highly-controversial anime adaptation for Mushoku Tensei: Jobless Reincarnation, and like so many more, I was already getting excited for its second season as soon as its first came to a close. However, also like many, I proceeded to be half-disappointed, half-confused when I saw the announcement for Oniichan wa Oshimai! with the name of Studio Bind—the studio which I thought was created for the sole purpose of adapting Mushoku Tensei—so proudly attached. A veteran animator like Shingo Fuji making a directorial debut at a studio I can actually trust to ...
Mar 23, 2023
Mixed Feelings
The only reason why I decided to give this anime a shot is because of the fact it was going to be animated by Studio Bind. Therefore, I thought... "Why not? Looks interesting to me. A gender-bender anime about a failure in life who became a loli by his or should we say 'HER' now to give HER a second chance in life." Now I know what you're thinking, if you look into this out of context, it's essentially a story about a fully grown man who's living alongside middle schoolers who don't have the slightest idea of this PERSON's past, yet it's treating it ...
Jan 29, 2023
Mixed Feelings
Preliminary (4/12 eps)
This anime is a pretty polarizing piece of media. It is something for the male gaze and for lolicons. Trans people and cis women will probably not like it (but not generally, like what you want). Studio Bind already showed with Mushoku Tensei that a sexist world can be interesting for viewers and if the production is good enough, r*pe humor will keep people entertained. This is their second IP they touch and oh boy, it got worse.

The original manga has the same problems with their initial setup, but leans more into the slice of life aspects than the anime does. The anime has a ...
Mar 23, 2023
Mixed Feelings
Studio Bind has given birth to an anime like no other: a magical sex shift anime with cgdct stuff. If my parents were to walk in on me while I was watching this show, I would quickly switch to a porn tab, how would one explain a loli girl moaning? But let’s get to the real point, is it worth watching? If one is able to look past the initial shock factor of episode 1 then the show has a lot to offer. A fanservice episode doesn’t necessarily mean its the end of the world.

The story starts off like any other simplistic gender-benders. An otaku ...
Jan 19, 2023
Preliminary (3/12 eps)
There is something oddly weird about this show. Think of it like Dragon maid. While there are for sure, sus moments, and moments that are very questionable. Because underneath some questionable material, is something that is actually quite wholesome, and really knowledgeable for that matter. But also, something I doubt many will touch upon, that it's not too perverted? Like, one would suspect that it would completely dive in that direction from the MC, going from a boy to a girl, but weirdly enough, it's more tame in that department.There are still moments that hit that way, but they're not major as one would think. ...
Jan 19, 2023
Preliminary (3/12 eps)
imo
when i watch the trailer for the anime i would think "ah shit a gender bender ass anime"
but after watching it, it actually wholesome even though the anime contain ecchi moment and so call "fan service" moment
from a "shut-in" brother that never go outside or even talk to his little sister and now he in his girl form start to go outside and start to talk with his little sister again even making some new friends
i would recommend for those who like wholesome anime
i know that some of you dont like ecchi or fan-service but give it a try
Jan 27, 2023
Preliminary (4/12 eps)
I love this anime.

Some other reviewers are disturbed by the forced feminization as a betrayal and irritated by how trans people could like this anime. I think this anime is wholesome and it should have “slice of life” as a tag as well.

Like what betrayal, Tohru the dragon was attacked by gods against her own will and it is tragic and she was betrayed? So what? It is a fiction? And a gothic loli joins to her gang but they were licking each other in bathroom? And the most horrible character appears Ilulu? Still does not make anything from the show's wholesomeness about how a ...
Mar 23, 2023
Onimai will go down as one of the best anime of 2023. Sadly, it’s also one of the misunderstood shows. It’s faced constant backlash and slander from people who based their entire judgement of the series on a few small scenes or a character design. This is not lolicon bait, CP bait, whatever you want to call it. Onimai is a genuinely well written and wholesome story about self-acceptance, growth and developing interpersonal relationships.

Studio Bind’s second anime project could not be more different from Mushoku Tensei, yet it retains the same attention to detail, directorial prowess and film like artistic quality we’ve come to expect ...
Mar 23, 2023
DO NOT WATCH THIS IF YOU:

-Don't like Gender Bender, Cross-Dressing or Trans works
-Don't like satire about sexuality and gender
-Are sensitive to fanservice and find it in all its forms disgusting
-Are a NEET who has been living under the tutelage of your younger sister for 2 years and does not wish to be represented on this show
-An idiot who doesn't get jokes

This is WRONG, absolutely WRONG. But in a discreet and provocative way, firstly uncomfortably funny and later cutely funny, but it's a story about getting another chance at life.

Okay, so the story is that after two years of living a hikikomori life, Mahiro Oyama, an ...
Feb 17, 2023
Preliminary (7/12 eps)
Don't listen to the people who said this anime is only for pedophiles and lolicons. The extreme fanservice is only present in the first episode and the opening. Skip the opening if you don't like it. Read the manga instead. It's worth it.



This anime is a feel good slice of life with cute moments and you can feel happy watching Mahiro grow as a person. The animation is great and feels so fluid and the art style is just eye candy.


The story is your normal slice of life stuff after the first episode after Mahiro gets turned into a girl. It's heartwarming to see Mahiro ...
Jan 23, 2023
Mixed Feelings
Preliminary (3/12 eps)
Thus far this show has been a definite mixed bag. Whilst it keeps a lot of the wholesomeness and cuteness that the manga has it also adds a lot of unnecessary fanservice. Not only does the anime constantly sexualise Mahiro, whose body is that of a middle schooler's so yikes, but it also manages to change several parts of the manga through the fanservice.
It feels as if the anime is often putting the comedy on the back burner in favour of having the newly added fanservice be the main selling point.

Kaede I'd say is the worst off at this point, she feels like a different ...
Feb 10, 2023
Preliminary (5/12 eps)
Extremely cute and wholesome... but not made for hysterical puritans.

Originally, early complains about the show made me skip it. I actually tend to like _some_ fanservice, but not in combination with somewhat "childish" animation style.

Then, my daughter (8yo) had seen the first two episodes and enthusiastically recommended the show to me basically as a "must watch".

Long story short, we both enjoy it very much and consider it one of the best shows of this season. It is extremely cute (the ending sequence is possibly the cutest thing Ive seen in recent anime) and wholesome, and occassionally funny, with some Dragon Maid meets Yuru Yuri vibes. ...
Jan 29, 2023
FunnyFunny
Preliminary (4/12 eps)
At first this anime made me question my sexuality, and it had a questionable story but the more episodes I watched I kept getting hooked in and it's likely be the same for you too.

Studio Bind overkilled the animation of Onimai, which is a Slice of Life anime, and they did not have to do this, but they did it anyway, 'cause why not, and I am so happy they did, because out of all the 90-ish anime I've seen this has the best animation. How? Well you can literally calculate the physics of a ramen noodle, and it would be 90℅ accurate because that ...
Feb 16, 2023
FunnyFunny
Preliminary (7/12 eps)
There is a SHIT TON of unnecessary sexualization of the main characters (as well as one-off characters) in this anime that does not appear in the manga, kept seeing comments saying the manga was 10x better, and I'm gonna have to agree, there is not an ounce of sexualization from what I've seen, an example is a scene in the latest episode (Ep 7), where the teacher has MASSIVE breasts for no apparent reason (which wouldn't be an issue, if not for the fact the show has already terrible rep. at this point in the show) while still she appears to look like a child, ...
Feb 2, 2023
Preliminary (5/12 eps)
Don't believe other reviewers out there trash-talking this show, this is a good anime. if you don't like it then it might not be for you.
As a manga fan myself since it came out I'm not one bit disappointed with this adaptation. the animation is nothing but superb, Studio Bind is just showing off at this point that they can deliver god-tier animation like Mushoku Tensei on any show they touch upon. sure some might not be fond of the fan service of this show but hey, if you don't like it then go watch the censored version. They got 2 versions for a reason ...
Mar 23, 2023
FunnyFunny
Onimai has finally Oshimai...

Onimai has got to be one of the best success stories this generation. I remembered reading the original when it was still a Pixiv manga all those years back, and seeing it animated with such high quality animation is simply stunning.

I knew I was in for a treat when the OP first played. Such fluid animation that blows everything else from this decade out of the water, with a flair you haven't seen since the 2000s ended, all wrapped up in a beautifully directed package by the always great Watanabe Akio. No rotoscoping, no 3DCG, no cheap stills, what you see ...
Mar 23, 2023
FunnyFunny
Whether you like it or hate it due to the themes it has, Studio Bind has crafted another masterpiece of animation in their relatively new hands as an studio even if not really fully new animators, giving us animation so good that would put MAPPA, Cloverworks and A-1 Pictures to shame in every single episode. Filled with “questionable” scenes that I couldn’t give less of a fuck if people complain about them or not, the series is about the NEET Mahiro who one day finds himself waking up as a girl due to a experiment from her sister who has been very worried about him, ...
Feb 6, 2023
Preliminary (5/12 eps)
Onimai is a show about a man who turns into a little girl as a result of his little sister's science experiment. As the show progresses, the protagonist, Mahiro, starts to learn and understand the lifestyle as well as the body of a girl. At first Mahiro attempts to retain his masculinity but slowly accepts his life as a girl.

Compared to Mushoku Tensei's protagonist (which is another one of Studio Bind's work pieces) and Onimai's protagonist, both of them learn how to stop having unhealthy views about women as the story progresses as well as learn how to adapt to their situation. They both change ...
Mar 23, 2023
Studio Bind, you guys adapt the most polarizing things, but boy, does this studio animate things well! From the studio who adapted Mushoku Tensei, one of the greatest isekai adaptations ever, to Onimai, a gender-bending, mind-boggling show, that somehow ended up being a very wholesome CGDCT anime. Without a doubt, this show will be uncomfortable to many, and even as wholesome as it is, the initial premise does sadly bring my enjoyment down a little. Did this show have to be so fanservice heavy at the beginning? However, I will admit that as the episodes went along, they did end up very wholesome and at ...
Mar 20, 2023
FunnyFunny
Preliminary (11/12 eps)
Words cannot describe how great this manga is as a trans person, and let's get this out of the way already: Yes, Mahiro IS transgender, and has had signs of being throughout the entire show, Mahiro herself is what we call in the community "An Egg", or, in other words, a trans person in denial, or a trans person that hasn't realized they're a trans person yet, which is where Mahiro falls in. Notice that never once Mahiro asks Mihari to turn her back into a boy, despite being in denial of her girlish qualities, some things she says feel like it's taken straight out ...