Onii-chan Is Done For! - Highschool ONIMAI (Doujinshi)
ONGOING162 Chapters
Synopsis
Without being able to return to being a man, Mahiro Oyama stayed as a girl since middle school and now has become a beautiful high-schooler who gets completely dominated by his first friend since the transformation, Momiji Hozuki, who has gotten really tall and became popular with the girls in their school.
Chapter List
Chapter 151Bratty Catgirl fetishes
Chapter 150Succubus Dress & Mind Break
Chapter 149Child Chitose and Kind Mahiro
Chapter 148Final character profiles
Chapter 147Huge boobs, short haired Mahiro-chan
Chapter 146Mahiro-chan falls prey to the dangerous onee-san from the research lab
Chapter 145Thank you. Ch-
Chapter 144Mahiro, who isn't really thinking about being popular.
Chapter 143Expressing through Art
Chapter 142HS - Momiji, who ranks number one in the "I want to be held" ranking in her class.
Chapter 141HS - Asahi growing up in order to become the #1 most huggable girl in the ranking (2)
Chapter 140Year of the Horse
Chapter 139HS - Asahi growing up in order to become the #1 most huggable girl in the ranking.
Chapter 138Sleepover
Chapter 137Totally wholesome moment between guys
Chapter 136Totally wholesome sister moment
Chapter 135Mushroom Growth
Chapter 134Wet dream after watching a certain movie
Chapter 133Pocky Game (3)
Chapter 132Upskirt
Chapter 131Paralysis
Chapter 130Ma-hiro Baiser
Chapter 129Momiji's Birthday Gift
Chapter 128A manga where JK Momiji feels sensitive to stares
Chapter 127Papahiro gets cucked by his own son.
Chapter 126HS - Mommy Genes
Chapter 125So we're gonna do it right now?!
Chapter 124Onii-chan wa Oshimai! in a Nutshell
Chapter 123Domination Loss
Chapter 122Food-flation
Chapter 121.5Mahiro-chan, the girl(?) who looks good in summer
Chapter 121JK Mahiro and Momiji and the porn books from those days (a timeline where he revealed herself as a man)
Chapter 120"I wanted Mahiro-chan to say that famous line."
Chapter 119You gettin' raped
Chapter 118Robo-Mihari Mk. 2
Chapter 117.1Rabbit Hole
Chapter 117HS - Changing Sense of Distance
Chapter 116What if Mahiro-chan continues growing as a girl
Chapter 115Magical Girl Mahiro (2)
Chapter 114Minato and Yuuta (2)
Chapter 113LoveMaster Momiji
Chapter 112Happy Birthday, Miyo
Chapter 111Kemonomimi
Chapter 110Matatabi (2)
Chapter 109Matatabi
Chapter 108Asahi x Miyo (8)
Chapter 107My (Tiny) Dress-Up Bro 2
Chapter 106My (Tiny) Dress-Up Bro
Chapter 105Physical Contact (5)
Chapter 104Dirty Joke
Chapter 103Golden Week
Chapter 1022 Girls, 1 Car (Fetish Warning)
Chapter 101Immediate Sex
Chapter 100MomiHiro NTR
Chapter 99Bratty Mahiro
Chapter 98Smug Momiji
Chapter 97Jujutsu Kai-Yuri-sen
Chapter 96Reversal Play
Chapter 95EX - "Punishment"
Chapter 94Pervert
Chapter 93Drunk Futa (Not-so-SFW)
Chapter 92Strange Behaviors
Chapter 91Love Nectar (Very, VERY late Valentines)
Chapter 90Overdone Incest
Chapter 89Rammot Mihari
Chapter 88HS - Setsubun Oni (NSFW?)
Chapter 87HS - Housewife Mahiro
Chapter 86Mihari x Kaede (2)
Chapter 85Mihari x Kaede
Chapter 84Mahiro's Research Project
Chapter 83HS - Oyama Claus (2)
Chapter 82.5HS - Mahiro and her Dress (2)
Chapter 82Mahiro and her Dress
Chapter 81.8Mahiro(♂) and Nayuta (3)
Chapter 81.5Mahiro(♂) and Nayuta (2)
Chapter 81Mahiro(♂) and Nayuta
Chapter 80.5HS - Pocky Game (2)
Chapter 80Reward
Chapter 79.5Asahi x Miyo (7)
Chapter 79Asahi's first kiss
Chapter 78Misleading
Chapter 77EX - Asahi's breast growth
Chapter 76.5EX - Big brother
Chapter 76Lv. 50
Chapter 75.5EX - Private Lessons
Chapter 75Newlyweds
Chapter 74HP Boost
Chapter 73EX - Change of Clothes
Chapter 72EX - Shota Mahiro (2)
Chapter 71Oversized
Chapter 70Seduction (JK Gyaru Momiji ver.)
Chapter 69.5EX - Momiji in Wonderland
Chapter 69(re) Temptation
Chapter 68EX - Temptation
Chapter 67EX - Arm wrestling
Chapter 66EX - Mahiro Crossdressing
Chapter 65EX - Chest rub
Chapter 64EX - Sadism
Chapter 63EX - Asahi x Miyo | Jealousy
Chapter 62EX - Angel or Devil?
Chapter 61EX - Embarassing Secrets
Chapter 60EX - Shota Mahiro
Chapter 59EX - Mamahiro
Chapter 58Reunion
Chapter 57Birthday Proposal (Years Later...)
Chapter 56EX - Magical Girl Mahiro (Tentacle Warning)
Chapter 55Hidden Desires | Choco
Chapter 54EX - Homemade Choco
Chapter 53EX - Setsubun (NSFW Warning)
Chapter 52EX - Judo Match
Chapter 51Physical Contact (4)
Chapter 50Weight Loss
Chapter 49EX - Physical Contact (3)
Chapter 48EX - New Year's Kiss
Chapter 47Oyama Claus
Chapter 46Christmas Date
Chapter 45EX - Minato and Yuuta
Chapter 44Hidden Desires | Cheerleading
Chapter 43EX - Asahi x Miyo (5)
Chapter 42EX - Asahi x Miyo (4)
Chapter 41Nayuta's (Late) Introduction
Chapter 40EX - Asahi x Miyo (3)
Chapter 39EX - Romance with Amazake (Preview Ver.)
Chapter 38EX - Pocky Game
Chapter 37Idol Recruitment
Chapter 36Trick or Treat
Chapter 35Momiji's Birthday Present
Chapter 34EX - AsaMiyo (Asahi x Miyo) (2)
Chapter 33Hidden Desires
Chapter 32Breast Growth
Chapter 31EX - Mahiro and Nayuta
Chapter 30A Hug from Future Sister-In-Law
Chapter 29Kabedon (2)
Chapter 28EX - AsaMiyo (Asahi x Miyo)
Chapter 27EX - MaMiyo (Mahiro x Miyo)
Chapter 26Mahiro and Yuuta
Chapter 25Surprise Kiss
Chapter 24EX - Tug of War
Chapter 23EX - Physical Contact (2)
Chapter 22Bunny Suit (+ Wolf Suit)
Chapter 21What If... (2)
Chapter 20Drunk Mahiro | First (Real) Kiss
Chapter 19EX - Drunk Mahiro
Chapter 18EX - Wild Imagination
Chapter 17A Threesome
Chapter 16Preparation 2
Chapter 15Role Reversal | Cosplay
Chapter 14Jealousy
Chapter 13Cheerleading Support
Chapter 12EX - Massage Practice
Chapter 11EX - Birthday Proposal
Chapter 10Hakama
Chapter 9EX - Love Hotel
Chapter 8EX - Preparation
Chapter 7Future Sister-In-Law
Chapter 6What If
Chapter 5EX - First Kiss
Chapter 4EX - Physical Contact
Chapter 3Role Reversal
Chapter 2Asahi's Sexual Assault
Chapter 1Kabedon
Chapter 0Introduction
Genres
GenderswapRomanceGirls' LoveDoujinshiSchool LifeWeb ComicSlice of Life