Manga like Niwasaki Diary

Onii-chan wa Oshimai! Tanjoubi

Status: Finished
Genres: Comedy , Slice of Life

Includes:
1) まひろちゃんお誕生日会場 (2022 March 6)
2) みはりちゃんお誕生日会場 (2022 April 22)
3) あさひお誕生日会場 (2022 May 5)
4) みよちゃんお誕生日会場 (2022 June 18)
5) かえでちゃんお誕生日会場 (2022 September 12)
6) もみじお誕生日会場 (2022 October 20)
7) なゆたんお誕生日会場 (2022 November 23)
8) まひろちゃんお誕生日会場 2023 (2023 March 6)
9) みはりちゃんお誕生日会場2023 (2023 April 22)


Tags: Primarily Female Cast

Onii-chan wa Oshimai! Tokubetsu-hen

Status: Finished
Genres: Comedy , Slice of Life

Specials chapters of Onii-chan wa Oshimai! bundled with the mini dramas CD sold during Comic Market.

Tags:

Onii-chan wa Oshimai! Koushiki Anthology Comic

Status: Finished
Genres: Comedy , Slice of Life

An anthology comic of Onii-chan wa Oshimai! by various mangaka.

Tags: Anthology , Episodic , Female Protagonist , Gender Bending , Yuri , Age Regression

Onii-chan wa Oshimai!

Also known as ONIMAI: I'm Now Your Sister!.

Status: Releasing
Genres: Comedy , Slice of Life

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!



Note: Includes 57 extra chapters.

Tags: Gender Bending , Cute Girls Doing Cute Things , Iyashikei , Primarily Female Cast , LGBTQ+ Themes , Transgender , School , Rehabilitation , Hikikomori , Age Regression , Yuri , Crossdressing , Bisexual