Onii-chan wa Oshimai! 
Login to add items to your list, keep track of your progress, and rate series!
Description
From Kodansha:
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.
Type
Manga
Related Series
Associated Names
Ab sofort Schwester!
Onii-chan Is Done for
Onii-chan Is Done for!
ONIMAI: I'm Now Your Sister!
Мой братик теперь не братик!
Мій братик вже не братик
お兄ちゃんはおしまい！
不当哥哥了！
别当欧尼酱了！
Groups Scanlating
Latest Release(s)
c.99 by daily multivitamin 2 weeks ago
c.98 by daily multivitamin 1 month ago
c.95.5 by daily multivitamin 2 months ago
Search for all releases of this seriesStatus in Country of Origin
9 Volumes (Ongoing)
Completely Scanlated?
No
Anime Start/End Chapter
Starts at Vol 1, Chap 1
Ends at Vol 4, Chap 38 - Skips Chap: 4, 8-8.5, 10.5, 18.5, 20.5, 24.5, 25.5, 26.5, 32-32.5, 33.5
User Reviews
N/A
Forum
0 topics, 0 posts
Click here to view the forumUser Rating
Average: 7.1 / 10.0 (93 votes)
Bayesian Average: 6.9 / 10.0
10
16%
9+
16%
8+
18%
7+
17%
6+
12%
5+
5%
4+
3%
3+
3%
2+
1%
1+
8%
Last Updated
April 26th, 2025 12:31am PDT - 2 weeks ago
Image [Report Inappropriate Content]
Genre
Categories
Category Recommendations
Recommendations
N/A
Author(s)
Artist(s)
Year
Original Publisher
Serialized In (magazine)
Comic REX ()
Licensed (in English)
Yes
English Publisher
Kodansha USA (9 Digital Volumes; Ongoing)
Activity Stats (vs. other series)
Weekly Pos #714 
(+1)
(+1)Monthly Pos #945 
(-211)
(-211)3 Month Pos #1539 (-418)
(-418)6 Month Pos #2494 (-43)
(-43)Year Pos #2482 (+592)
(+592)List Stats
Note: You must be logged in to update information on this page.
Forum Posts Click to view the forum
