In this post, we take a closer look at the current status of the series “Oniichan wa Oshimai!”, also known by the following titles:
- Onimai: Im Now Your Sister!
- お兄ちゃんはおしまい！
- Onimai
- Onii-chan is Done For
Status#
Based on our analysis, the series is NOT FINISHED. ❌
Here’s how we reached that conclusion:
- Some related entries are still listed as ongoing on MyAnimeList
- The series is listed as ended on Trakt
- The original source material has not been fully adapted, according to MangaUpdates
Taken together, these points indicate that Oniichan wa Oshimai! is still ongoing in some form.
Watch order#
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Oniichan wa Oshimai! ↗ ↖
June 27, 2018
Publishing
Manga
Onimai: Im Now Your Sister!
お兄ちゃんはおしまい！
お兄ちゃんはおしまい！
Summary
Mahiro Oyama was just a normal erotic-game loving dude...until he woke up one morning as a woman! Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him... with a disastrous outcome, as far as Mahiro's concerned! But Mihari is as determined to study him as he is determined to go back to his shut-in, game-playing life, and one thing's for sure... life is going to get a whole lot weirder from here on out!(Source: Kodansha USA)
Background
Oniichan wa Oshimai! is a web manga released on the author's pixiv account since February 25, 2017, and published in print by Ichijinsha since June 27, 2018. The web manga has also been published as doujinshi since May 6, 2017, when the first volume was released at COMITIA 120. The series has been published digitally in English as Onimai: I'm Now Your Sister! by Kodansha Comics USA since August 31, 2021.
Oniichan wa Oshimai! ↗ ↖
January 5, 2023
Finished Airing
TV
Onimai: Im Now Your Sister!
お兄ちゃんはおしまい！
お兄ちゃんはおしまい！
Summary
Self-professed "home security guard" Mahiro Oyama has not left his home in years, secluding himself in his room playing erotic visual novels. This depraved lifestyle causes his prodigious sister, Mihari, to worry about his well-being. In hopes of solving this problem, she devises a plan to rehabilitate him back to normalcy.The first part of Mihari’s plan is to concoct a medicine that changes her brother’s biological constitution into a bona fide female, much to Mahiro’s vehement dismay. Stuck in this predicament, Mahiro has no choice but to live out his life as a cute girl until the effect wears off—if it ever does.
[Written by MAL Rewrite]