Oniichan wa Oshimai!

お兄ちゃんはおしまい！, Onii-chan is Done For

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Authors: Nekotoufu

Status:Ongoing

Genres: Comedy Slice of Life Gender Bender Doujinshi

Rating: 9.54/10 (71 votes)

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Summary

Oyama Mihari's brother turns into a girl after she slips a certain medicine into his dinner. This is the story of him learning the ways of being a girl.

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Chapter List

First Chapter

Vol.1 : Chapter 1

New Chapter

Chapter 95.9: Minato-Kun Is Done For? 2

Jan 01, 2025

Chapter 95: Mahiro And The University Expedition Squad

Dec 28, 2024

Chapter 94: Mahiro And The New School Year, Once Again

Nov 30, 2024

Chapter 93: Mahiro And A Special Treat

Oct 26, 2024

Chapter 92: Mahiro And A Maiden's Secret

Sep 28, 2024

Chapter 91: Mahiro And Marriage

Aug 31, 2024

Chapter 90.8: Mahiro And Mama (Revisited)

Oct 19, 2024

Vol.9 Chapter 90.5

Aug 17, 2024

Chapter 90: Mahiro And Celebrating Success

Jul 27, 2024

Chapter 89: Mahiro And A Home Visit

Jun 29, 2024

Chapter 88: Mahiro And Romantic Antics

Jun 29, 2024

Chapter 87: Mahiro And Special Techniques

Jun 29, 2024

Chapter 86.9: Minato-Kun Is Done For? 1.5

Apr 10, 2024

Chapter 86.5: Special: Asahi's Birthday

Sep 21, 2024

Chapter 86: Mahiro And Overflowing Maternal Instincts

Apr 10, 2024

Chapter 85.5

Aug 18, 2024

Chapter 85: Mahiro And A Stressful Reunion (Part 2)

Feb 24, 2024

Chapter 84: Mahiro And A Stressful Reunion (Part 1)

Jan 27, 2024

Chapter 83.9: Minato-Kun Is Done For? (Full Version)

Jan 07, 2024

Chapter 83: Mahiro And The New Year's Tour

Dec 31, 2023

Chapter 82.5

Mar 03, 2024

Chapter 82

Nov 25, 2023

Chapter 81.9: Minato-Kun Is Done For? (Preview Version)

Nov 11, 2023

Chapter 81.5: Chapter 81.5

Jan 11, 2024

Chapter 81: Mahiro And Conflicting Views

Oct 28, 2023

Chapter 80.8: Mahiro And The Growing Gal Gang + Volume 8 Extras

Jan 11, 2024

Chapter 80.5

Dec 30, 2024

Chapter: Mini Extras [Partial]

Dec 31, 2023

Chapter: Mini Extras [Partial]

Dec 31, 2023

Chapter 80: Mahiro And The Secret Engagement

Sep 30, 2023

Chapter 79: Mahiro And The Gal Gang

Aug 26, 2023

Chapter 78.9: Mihari's Research Lab

Aug 16, 2023

Chapter 78.5: The Boys And Mmorpgs

Aug 14, 2023

Chapter 78: Mahiro And Mmorpgs Revisited

Jul 29, 2023

Chapter 77: Mahiro And The Farewell Party

Jun 24, 2023

Chapter 76.9: The Research Lab's Mihari-Chan

Jun 04, 2023

Chapter 76.1: Blu-Ray Box Volume 2 Add-In Comic

Jun 25, 2023

Chapter 76: Mahiro And A Close Call

May 27, 2023

Chapter 75: Mahiro And The Siren's Call

Apr 29, 2023

Chapter 74.99: Mihari's Birthday Venue

Apr 21, 2023

Chapter 74.5: Everyone And The Blackout

Jun 17, 2023

Chapter 74.1: Blu-Ray Box Volume 1 Add-In Comic

Dec 31, 2023

Vol.8 Chapter 72.9: The Boys Are Done For Too! + Omnibus 22-23-24 Extras

Aug 15, 2024

Chapter 70.5

Dec 30, 2024

Vol.7 Chapter 68.99: Momiji Birthday Venue

Apr 19, 2023

Vol.7 Chapter 62.1: Mihari-Chan's Birthday Venue

Apr 19, 2023

Chapter 60.5

Dec 30, 2024

Chapter 56.5

Aug 18, 2024

Vol.6 Chapter 54.9: Omnibus 16-17-18 Extras

Jun 17, 2023

Chapter 54.75: Mahiro And Harems

Jun 17, 2023

Vol.6 Chapter 54.7: Mahiro And Harems

Jun 17, 2023

Vol.6 Chapter 54.5: Mahiro And The Serene Mind

Jan 28, 2024

Chapter 50.6

Dec 30, 2024

Vol.5 Chapter 48.5: Mahiro And The Parent-Teacher Conference

Jan 11, 2024

Chapter 47.5

Dec 30, 2024

Vol.5 Chapter 45.9: Omnibus 13-14-15 Extras

Jun 17, 2023

Vol.5 Chapter 45.7: Mahiro And Visible Undergarments

Jun 17, 2023

Vol.5 Chapter 42.6: Ex3 Special - Mahiro And A Hair's Breadth From Danger!

Nov 30, 2024

Vol.5 Chapter 42.5: [Temp 1]41.3+41.7 &Amp; 42.5 &Amp; Mini Extra (2 Of 10)

Nov 30, 2024

Vol.4 Chapter 39.5: [Temp 3]37.5 &Amp; 38.5 &Amp; Mini Extra (9 Of 10)

Nov 30, 2024

Vol.4 Chapter 37.5: [Temp 2]34.5 &Amp; 36.5 &Amp; Mini Extra (6 Of 10)

Nov 30, 2024

Vol.4 Chapter 36.9: Mahiro's Weekday Routine + Omnibus 10-11-12 Extras

Jun 17, 2023

Vol.4 Chapter 35.4: [Temp]32.5 &Amp; 33.5 &Amp; Mini Extra (3 Of 10).Zip

Nov 30, 2024

Chapter 22.5: Ex Special

Nov 30, 2024

Chapter 10: Mahiro And Special Home Security

Nov 30, 2024

Chapter: Mini Extras [Partial]

Apr 19, 2023

Chapter 73.1: Mahiro-Chan's Birthday Venue (2023)

Apr 19, 2023

Chapter: Mini Extras [Partial]

Apr 19, 2023

Chapter 74: Mahiro And The Two's Night

Mar 25, 2023

Chapter 73

Mar 20, 2023

Chapter 72: Mahiro And An Admiration

Feb 20, 2023

Chapter 71.5

Apr 19, 2023

Chapter: Mini Extras [Partial]

Apr 19, 2023

Chapter 71: Mahiro And The Selfie Boom

Jan 18, 2023

Chapter 70.9: Volume 7 Extras

Mar 25, 2023

Chapter 70.8: Mahiro And A Discussion On Cosplay

Mar 25, 2023

Chapter 70.7: Volume 7 Special Booklet

Apr 19, 2023

Chapter 70: Mahiro And An Autumn Outing

Dec 13, 2022

Vol.7 Chapter 69.99: Nayutan's Birthday Venue

Apr 19, 2023

Chapter 69.5: Mahiro And A Moment Of Glory

Mar 25, 2023

Chapter 69: Mahiro And The Youthful Sports Festival

Dec 13, 2022

Chapter 68: Mahiro And The World Of Hobbies

Oct 19, 2022

Vol.7 Chapter 67.99: Kaede-Chan's Birthday Venue

Apr 19, 2023

Chapter 67: Mahiro And Male Pride

Sep 11, 2022

Chapter 66.5: The Boys And Changing Shifts

Mar 25, 2023

Chapter 66: Mahiro And The Tempting Culture Festival (Part 2)

Aug 03, 2022

Chapter 65: Mahiro And The Tempting Culture Festival (Part 1)

Jun 29, 2022

Chapter 64: Mahiro And A Healthy Diet

Jun 28, 2022

Chapter 63.5: Momiji And Panties

Mar 25, 2023

Chapter 63: Mahiro And Staying Over Because Of Rain

May 01, 2022

Chapter 62.5: Nemu And Summer Vacation

Mar 25, 2023

Chapter 62: Mahiro And A 2Nd Semester Debut

Mar 29, 2022

Chapter 61: Mahiro And Summer Festival

Mar 01, 2022

Chapter 60: Mahiro And Summer Homework

Feb 13, 2022

Chapter 59: Mahiro And Spring Cleaning

Mar 29, 2022

Chapter 58: Mahiro And The Marine Ranger (Part 2)

Dec 26, 2021

Chapter 57: Mahiro And The Marine Ranger (Part 1)

Dec 26, 2021

Chapter 56: Mahiro And The Battle Plan Meeting

Dec 26, 2021

Chapter 55: Mahiro And A Summer Adventure

Dec 26, 2021

Chapter 54: Mahiro And School Ghost Stories

Dec 26, 2021

Jun 30, 2022

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Vol.5 Chapter 49: Mahiro And Swim Classes (Part 1)

Dec 26, 2021

Chapter 46.5

Jun 30, 2022

Chapter: Mini Extras [Partial]

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Jun 30, 2022

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Jun 30, 2022

Jun 30, 2022

Jun 30, 2022

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Vol.4 Chapter 39: Mahiro And An Important Secret

Dec 26, 2021

Vol.4 Chapter 38.5

Dec 26, 2021

Vol.4 Chapter 38: Mahiro And An Appreciated Break

Dec 26, 2021

Vol.4 Chapter 37.5: [Temp 2]34.5 & 36.5 & Mini Extra (6 Of 10)

Dec 26, 2021

Vol.4 Chapter 37: Mahiro And A Girl's Mannerisms

Dec 26, 2021

Vol.4 Chapter 36.5

Dec 26, 2021

Vol.4 Chapter 36: Mahiro And A Surprise

Dec 26, 2021

Chapter 35.6

Jun 30, 2022

Vol.4 Chapter 35.5: Ex2 Special - I Am Mahiro And I Am Mihari

Dec 26, 2021

Vol.4 Chapter 35.4: [Temp]32.5 & 33.5 & Mini Extra (3 Of 10).zip

Dec 26, 2021

Vol.4 Chapter 35: Mahiro And The Guidance Of Fortunes

Dec 26, 2021

Vol.4 Chapter 34.5

Dec 26, 2021

Vol.4 Chapter 34: Mahiro and the Adult's Door

Dec 26, 2021

Vol.4 Chapter 33.5

Dec 26, 2021

Vol.4 Chapter 33: Mahiro and Valentine's

Dec 26, 2021

Vol.4 Chapter 32.5

Dec 26, 2021

Vol.4 Chapter 32: Mahiro and a Surprise Visit

Dec 26, 2021

Vol.4 Chapter 31: Mahiro and Charming Bare Legs

Dec 26, 2021

Vol.3 Chapter 30.9: Chapter 21-27 Mini Extras [Partial]

Dec 26, 2021

Vol.3 Chapter 30.8

Dec 26, 2021

Vol.3 : Chapter 30.5: Extra

Dec 26, 2021

Vol.3 : Chapter 30: Mahiro and the Coming and Going Year

Dec 26, 2021

Vol.3 : Chapter 29: Mahiro and a Double Date

Dec 26, 2021

Vol.3 : Chapter: Mini Extras [Partial]

Dec 26, 2021

Vol.3 : Chapter 28: Mahiro and Girl's Night (Second Part)

Dec 26, 2021

Vol.3 : Chapter 27.5: Including Extra

Dec 26, 2021

Vol.3 : Chapter 27: Mahiro and Girl's Night (First Part)

Dec 26, 2021

Vol.3 : Chapter 26: Mahiro and Patissier

Dec 26, 2021

Vol.3 Chapter 25: Mahiro And Finals

Dec 26, 2021

Vol.3 : Chapter 24.5: Part 1: Mahiro and Bento & Part 2: Mihari and Bento

Dec 26, 2021

Vol.3 : Chapter 24: Mahiro And Common Interests

Dec 26, 2021

Vol.3 : Chapter 23: Mahiro And The Fun Weekend

Dec 26, 2021

Vol.2 Chapter 22.5: Ex Special

Dec 26, 2021

Vol.2 : Chapter 22: Mahiro And The Harsh Lesson

Dec 26, 2021

Vol.3 : Chapter 21.5: Extras

Dec 26, 2021

Vol.2 : Chapter 21: Mahiro And The First Day Of School

Dec 26, 2021

Vol.2 : Chapter 20.9: Mini Extras

Dec 26, 2021

Vol.2 : Chapter 20.5: Mihari and Dresses + Mihari (afterwards) and Dresses

Dec 26, 2021

Vol.2 : Chapter 20: Mahiro And Middle Schoolers

Dec 26, 2021

Vol.2 : Chapter 19: Mahiro And Uploading Videos

Dec 26, 2021

Vol.2 : Chapter 18.5: Part 1: Mahiro and a "Comrade's" Return & Part 2: Mahiro and Perms

Dec 26, 2021

Vol.2 : Chapter 18: Mahiro And The Onsen Panic (Second Part)

Dec 26, 2021

Vol.2 : Chapter 17: Mahiro And The Onsen Panic (First Part)

Dec 26, 2021

Vol.2 : Chapter 16: Mahiro And The Hair Salon

Dec 26, 2021

Vol.2 : Chapter 15.5: Siblings and Kotatsu

Dec 26, 2021

Vol.2 : Chapter 15

Dec 26, 2021

Chapter 14.1 : Mahiro And Party Night

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Vol.1 : Chapter 10.9: Mini Extras

Dec 26, 2021

Vol.1 : Chapter 10.5: Mahiro And Helping Out & Omake - Mihari And Onii-Chan

Dec 26, 2021

Vol.1 : Chapter 10

Dec 26, 2021

Vol.1 : Chapter 9.5: Mahiro and the Two's Secret

Dec 26, 2021

Vol.1 : Chapter 9

Dec 26, 2021

Vol.1 : Chapter 8.5: Mahiro And Gacha

Dec 26, 2021

Vol.1 : Chapter 8

Dec 26, 2021

Vol.1 : Chapter 7

Dec 26, 2021

Vol.1 : Chapter 6.5: Mahiro And Going In Circles

Dec 26, 2021

Vol.1 : Chapter 6

Dec 26, 2021

Vol.1 : Chapter 5.5: Mahiro And Comfort For Many Days

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Dec 26, 2021

Vol.1 : Chapter 1.5: Mahiro And The Toilet

Dec 26, 2021

Vol.0 Chapter 1.01

Dec 26, 2021

Vol.1 : Chapter 1

Dec 26, 2021

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Onii-chan wa Oshimai - Chapter 505

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