Onii-chan Is Done For!
Onii-chan Is Done For!
Origination: manga Demographic: seinen Published: Status: 📖 ongoing State: published Content Rating: safe
Start Reading
Follow
Description 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! *5th place of Tsugi Manga Awards, Category Webmanga - **Retail:** (Direct Retail From the Mangaka) ![](https://i.imgur.com/0e9KPgq.png) [Official Melon Books](https://www.melonbooks.co.jp/circle/index.php?circle_id=3753) ![](https://i.imgur.com/t9hf4kQ.png) [Official Toranoana](https://ec.toranoana.shop/tora/ec/cot/circle/2UPA116P847KdC6Rd687/all/) ![](https://i.imgur.com/lGJEbPa.png) [Official DLSite](https://www.dlsite.com/home/circle/profile/=/maker_id/RG40614.html) (jp)
More Info
Artists: Authors: Related Manga:
021d5e40-9a35-4df9-8514-e38e0c53f813 021d5e40-9a35-4df9-8514-e38e0c53f813 027df837-7a15-4893-9dc3-e2ae11b94717 , 04789891-74e5-49e8-896e-63a09f2e8f56 , 061f87d8-cca0-425f-8c36-21eba9736b4c , 0d0e6baa-d29c-48e3-8475-039744229bc8 , 1942c669-36c2-4d29-bb62-7283ec6d8d91 , 21138d16-db29-4cf3-8618-bf124b863569 , 2c32b2c9-2036-420a-a778-a6b09dedfcfa , 5802ceba-ffdb-4ac9-920c-ed1aee077f63 , 71008ba1-2e55-46b6-9074-e3571a124cae , 8dab0ef4-a6f2-4ae3-84c3-7dfbd206469b , 8ec776ed-a512-4264-a8e2-e06c9d6ccd70 , 910de7e8-8c01-4ffb-ab33-277a3c4079ba , bd056ca6-209f-4816-aab7-208bafd1ef4c , d1b9f81d-8f0c-48db-8fd9-c7d4edf252ce , da5571cb-ebdc-415d-acb3-292870a18587 , f8b98104-549c-42ba-9af3-6e6622706a96
Tags
Genderswap Comedy School Life Web Comic Slice of Life
Chapters
Chapters Uploaded
Chapter - 99 - Mahiro and the Autobahn 2 weeks ago
Chapter - 98 - Mahiro and a One-Night Stay 1 month ago
Chapter - 97 - Mahiro and Crossing the Line 2 months ago
Chapter - 96 - Mahiro and a Token of Appreciation 2 months ago
Chapter - 95.9 - Minato-kun is Done For? 2 4 months ago
Chapter - 95.5 - Miyo and the Date 2 months ago
Chapter - 95 - Mahiro and the University Expedition Squad 2 months ago
Chapter - 94 - Mahiro and the New School Year, Once Again 2 months ago
Chapter - 93.5 - The Boys and Another Shot 4 months ago
Chapter - 93 - Mahiro and a Special Treat 6 months ago
Chapter - 92.5 - Asahi and Growth 4 months ago
Chapter - 92 - Mahiro and a Maiden's Secret 7 months ago
Chapter - 91.5 - Nemu and Nodoka 4 months ago
Chapter - 91 - Mahiro and Marriage 8 months ago
Chapter - 90.9 - Volume 9 Special Edition Extras 6 months ago
Chapter - 90.8 - Mahiro and Mama (Revisited) 6 months ago
Chapter - 90.5 6 months ago
Chapter - 90 - Mahiro and Celebrating Success 6 months ago
Chapter - 89 - Mahiro and a Home Visit 6 months ago
Chapter - 88.5 6 months ago
Chapter - 88 - Mahiro and Romantic Antics 6 months ago
Chapter - 87 - Mahiro and Special Techniques 6 months ago
Chapter - 86.9 - Minato-kun is Done For? 1.5 6 months ago
Chapter - 86.5 - Special: Asahi's Birthday 6 months ago
Chapter - 86 - Mahiro and Overflowing Maternal Instincts 6 months ago
Chapter - 85.5 6 months ago
Chapter - 85 - Mahiro and a Stressful Reunion (Part 2) 6 months ago
Chapter - 84 - Mahiro and a Stressful Reunion (Part 1) 6 months ago
Chapter - 83.9 - Minato-kun is Done For? (Full Version) 6 months ago
Chapter - 83 - Mahiro and the New Year's Tour 6 months ago
Chapter - 82.5 6 months ago
Chapter - 82 - Mahiro and a Silent Night 6 months ago
Chapter - 81.9 - Minato-kun is Done For? (Preview Version) 6 months ago
Chapter - 81.5 - Chapter 81.5 6 months ago
Chapter - 81 - Mahiro and Conflicting Views 6 months ago
Chapter - 80.8 - Mahiro and the Growing Gal Gang + Volume 8 Extras 1 year ago
Chapter - 80 - Mahiro and the Secret Engagement 1 year ago
Chapter - 79 - Mahiro and the Gal Gang 1 year ago
Chapter - 78.9 - Mihari's Research Lab 1 year ago
Chapter - 78.5 - The Boys and MMORPGs 1 year ago
Chapter - 78 - Mahiro and MMORPGs Revisited 1 year ago
Chapter - 77 - Mahiro and the Farewell Party 1 year ago
Chapter - 76.9 - The Research Lab's Mihari-chan 1 year ago
Chapter - 76.1 - Blu-Ray Box Volume 2 Add-in Comic 1 year ago
Chapter - 76 - Mahiro and a Close Call 1 year ago
Chapter - 75 - Mahiro and the Siren's Call 1 year ago
Chapter - 75 - Mahiro and Devilish Woman 1 year ago
Chapter - 74.99 - Mihari's Birthday Venue 1 year ago
Chapter - 74.5 - Everyone and the Blackout 1 year ago
Chapter - 74.1 - Blu-Ray Box Volume 1 Add-in Comic 1 year ago
Chapter - 74 - Mahiro and the Two's Night 1 year ago
Chapter - 73.1 - Mahiro-chan's Birthday Venue (2023) 1 year ago
Chapter - 73 - Mahiro and Big Bro's Secrets 1 year ago
Chapter - 72.9 - The Boys Are Done For Too! + Omnibus 22-23-24 Extras 8 months ago
Chapter - 72 - Mahiro and an Admiration 1 year ago
Chapter - 71.5 - Mahiro and the Magazine Model 1 year ago
Chapter - 71 - Mahiro and the selfie boom 1 year ago
Chapter - 70.9 - Volume 7 Special Booklet 2 years ago
Chapter - 70.8 - Volume 7 Extras 2 years ago
Chapter - 70.7 - Mahiro and a Discussion on Cosplay 2 years ago
Chapter - 70 - Mahiro and an autumn outing 2 years ago
Chapter - 69.99 - Nayutan's Birthday Venue 2 years ago
Chapter - 69.5 - Mahiro and a Moment of Glory 2 years ago
Chapter - 69 - Mahiro and the Youthful Sports Festival 2 years ago
Chapter - 68.99 - Momiji Birthday Venue 2 years ago
Chapter - 68 - Mahiro and the World of Hobbies 2 years ago
Chapter - 67.99 - Kaede-chan's birthday venue 2 years ago
Chapter - 67 - Mahiro and Male Pride 2 years ago
Chapter - 66.5 - The Boys and Changing Shifts 2 years ago
Chapter - 66 - Mahiro and the Tempting Culture Festival (Part 2) 2 years ago
Chapter - 65 - Mahiro and the Tempting Culture Festival (Part 1) 2 years ago
Chapter - 64 - Mahiro and a Healthy Diet 2 years ago
Chapter - 63.99 - Omnibus 19-20-21 Extras 1 year ago
Chapter - 63.5 - Momiji and Panties 2 years ago
Chapter - 63 - Mahiro and Staying Over Because of Rain 3 years ago
Chapter - 62.5 - Nemu and Summer Vacation 2 years ago
Chapter - 62.1 - Mihari-chan's Birthday Venue 2 years ago
Chapter - 62 - Mahiro and a 2nd Semester Debut 3 years ago
Chapter - 61 - Mahiro and Summer Festival 3 years ago
Chapter - 60 - Mahiro and Summer Homework 3 years ago
Chapter - 59 - Mahiro and spring cleaning 3 years ago
Chapter - 58 - Mahiro and the Marine Ranger (Part 2) 3 years ago
Chapter - 57 - Mahiro and the Marine Ranger (Part 1) 3 years ago
Chapter - 56 - Mahiro and The Battle Plan Meeting 3 years ago
Chapter - 55 - Mahiro and a Summer Adventure 3 years ago
Chapter - 54.9 - Omnibus 16-17-18 Extras 1 year ago
Chapter - 54.7 - Mahiro and Harems 1 year ago
Chapter - 54.5 - Mahiro and the serene mind 1 year ago
Chapter - 54 - Mahiro and School Ghost Stories 3 years ago
Chapter - 53.5 - Boys and Girls 3 years ago
Chapter - 53 - Mahiro and the North Wind and Sun 3 years ago
Chapter - 52 - Mahiro and the Little Garden 3 years ago
Chapter - 51 - Mahiro and Passing the Rainy Season 3 years ago
Chapter - 50.5 3 years ago
Chapter - 50 - Mahiro and Swim Classes (Part 2) 3 years ago
Chapter - 49 - Mahiro and Swim Classes (Part 1) 4 years ago
Chapter - 48.5 - MAHIRO AND THE PARENT-TEACHER CONFERENCE 1 year ago
Chapter - 48 - Mahiro and Class Observation 4 years ago
Chapter - 47 - Mahiro and the Sunny Girl 4 years ago
Chapter - 46.5 - Mihari and Memories of Stickers 3 years ago
Chapter - 46 - Mahiro and Sticker Collecting (fixed) 4 years ago
Chapter - 45.9 - Omnibus 13-14-15 Extras 1 year ago
Chapter - 45.7 - Mahiro and Visible Undergarments 1 year ago
Chapter - 45 - Mahiro and the Season for New Clothes 4 years ago
Chapter - 44 - Mahiro and the Secret BBQ 4 years ago
Chapter - 43.5 3 years ago
Chapter - 43 - Mahiro and Fragrances 4 years ago
Chapter - 42.6 - EX3 Special - Mahiro and a Hair's Breadth from Danger! 4 years ago
Chapter - 42.5 - [TEMP 1]41.3+41.7 & 42.5 & Mini Extra (2 of 10) 3 years ago
Chapter - 42 - Mahiro and the Gift of Memories 4 years ago
Chapter - 41 - Mahiro and the Physical Examination 4 years ago
Chapter - 40.99 - Bonus Illustration 4 years ago
Chapter - 40.8 - Mihari and Skipping Grades 4 years ago
Chapter - 40.6 - Mini Extras [Complete] 4 years ago
Chapter - 40.5 - Mahiro and Barefoot 4 years ago
Chapter - 40 - Mahiro and an Important Secret (Part 2) 4 years ago
Chapter - 39 - Mahiro and an Important Secret 5 years ago
Chapter - 38.5 - Momiji and Massages 4 years ago
Chapter - 38 - Mahiro and an Appreciated Break 5 years ago
Chapter - 37.5 - Mihari and High School Girls 4 years ago
Chapter - 37 - Mahiro and a Girl's Mannerisms 5 years ago
Chapter - 36.9 - Mahiro's Weekday Routine + Omnibus 10-11-12 Extras 1 year ago
Chapter - 36.5 - Mahiro and a Present 4 years ago
Chapter - 36 - Mahiro and a Surprise 5 years ago
Chapter - 35.6 - EX2 Special - I am Mahiro and I am Mihari 5 years ago
Chapter - 35 - Mahiro and the Guidance of Fortunes 5 years ago
Chapter - 34.5 - Chapter 34.5 (1+2+3) 4 years ago
Chapter - 34 - Mahiro and the Adult's Door 5 years ago
Chapter - 33.5 - Mahiro and Handmade 4 years ago
Chapter - 33 - Mahiro and Valentine's 5 years ago
Chapter - 32.5 - Mahiro and Drinks 4 years ago
Chapter - 32 - Mahiro and a Surprise Visit 5 years ago
Chapter - 31 - Mahiro and Charming Bare Legs 5 years ago
Chapter - 30.9 - Chapter 21-30 Mini Extras [Complete] 5 years ago
Chapter - 30.8 - Asahi and Momiji 5 years ago
Chapter - 30.5 - Mahiro and Hot Kiss 5 years ago
Chapter - 30 - Mahiro and the Coming and Going Year 5 years ago
Chapter - 29 - Mahiro and a Double Date 5 years ago
Chapter - 28.1 - Mahiro and Girl's Night (Second Part) [Tank Version] 5 years ago
Chapter - 28 - Mahiro and Girl's Night (Second Part) [Pixiv Version] 5 years ago
Chapter - 27.99 - Omnibus 7-8-9 Extras 1 year ago
Chapter - 27.5 - Including Extra (25.5 - 26.5 - 27.5) 5 years ago
Chapter - 27 - Mahiro and Girl's Night (First Part) 6 years ago
Chapter - 26 - Mahiro and Patissier 6 years ago
Chapter - 25 - Mahiro and Finals 6 years ago
Chapter - 24.5 - Part 1: Mahiro and Bento & Part 2: Mihari and Bento 3 years ago
Chapter - 24 - Mahiro and Common Interests 6 years ago
Chapter - 23 - Mahiro and the Fun Weekend 6 years ago
Chapter - 22.5 - EX Special - Mahiro and an Uneventful Holiday 5 years ago
Chapter - 22 - Mahiro and the Harsh Lesson 6 years ago
Chapter - 21.5 - Extras 5 years ago
Chapter - 21 - Mahiro and the First Day of School (V2) 6 years ago
Chapter - 20.9 - Chapter 11-20 Mini Extras 5 years ago
Chapter - 20.5 - Mihari and Dresses + Mihari (afterwards) and Dresses 5 years ago
Chapter - 20 - Mahiro and Middle Schoolers (v2) 6 years ago
Chapter - 19 - Mahiro and Uploading Videos 6 years ago
Chapter - 18.99 - Omnibus 4-5-6 Extras 1 year ago
Chapter - 18.5 - Part 1: Mahiro and a "Comrade's" Return & Part 2: Mahiro and Perms 3 years ago
Chapter - 18 - Mahiro and the Onsen Panic (Second Part) 6 years ago
Chapter - 17 - Mahiro and the Onsen Panic (First Part) 6 years ago
Chapter - 16 - Mahiro and the Hair Salon 6 years ago
Chapter - 15.5 - Siblings and Kotatsu 5 years ago
Chapter - 15 - Mahiro and Party Night 7 years ago
Chapter - 14 - Mahiro and a Little Adventure 7 years ago
Chapter - 13 - Mahiro and a Wholesome Relationship 7 years ago
Chapter - 12.5 - Mahiro and Nichiasa 5 years ago
Chapter - 12 - Mahiro and a Lonely Night 7 years ago
Chapter - 11 - Mahiro and Adventure 7 years ago
Chapter - 10.99 - Omnibus 1-2-3 Extras 1 year ago
Chapter - 10.9 - Chapter 1-10 Mini Extras 5 years ago
Chapter - 10.5 - Mahiro and Helping Out & OMAKE - Mihari and Onii-chan 3 years ago
Chapter - 10 - Mahiro and Special Home Security 7 years ago
Chapter - 9.5 - Mahiro and the Two's Secret 6 years ago
Chapter - 9 - Mahiro and a Girl's Vacation 7 years ago
Chapter - 8.5 - Mahiro and Gacha (v2) 7 years ago
Chapter - 8 - Mahiro and New Game 7 years ago
Chapter - 7 - Mahiro and Encounters with the Unknown 7 years ago
Chapter - 6.5 - Mahiro and Going in Circles 6 years ago
Chapter - 6 - Mahiro and the Secret Garden 7 years ago
Chapter - 5.5 - Mahiro and Comfort for Many Days 6 years ago
Chapter - 5 - Mahiro and a Melancholic Day 7 years ago
Chapter - 4 - Mahiro and MMORPG 7 years ago
Chapter - 3 - Mahiro and Identity 7 years ago
Chapter - 2 - Mahiro and the Dangerous Mirror 7 years ago
Chapter - 1.5 - Mahiro and the Toilet 6 years ago
Chapter - 1 - Mahiro and the Unpleasurable Body 7 years ago
Chapter - 1 - Mahiro and the Unpleasurable Body 7 months ago