Onii-chan Is Done For! - Highschool ONIMAI (Doujinshi)
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Description
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.
Chapters (137)
Volume -
Chapter 126 - HS - Mommy Genes
Published: Saturday, December 6, 2025Chapter 125 - So we're gonna do it right now?!
Published: Saturday, November 29, 2025Chapter 124 - Onii-chan wa Oshimai! in a Nutshell
Published: Saturday, November 22, 2025Chapter 123 - Domination Loss
Published: Saturday, November 15, 2025Chapter 122 - Food-flation
Published: Saturday, November 8, 2025Chapter 121.5 - Mahiro-chan, the girl(?) who looks good in summer
Published: Saturday, November 8, 2025Chapter 121 - JK Mahiro and Momiji and the porn books from those days (a timeline where he revealed herself as a man)
Published: Saturday, November 1, 2025Chapter 120 - "I wanted Mahiro-chan to say that famous line."
Published: Saturday, October 25, 2025Chapter 119 - You gettin' raped
Published: Saturday, October 18, 2025Chapter 118 - Robo-Mihari Mk. 2
Published: Saturday, October 11, 2025Chapter 117.1 - Rabbit Hole
Published: Sunday, October 5, 2025Chapter 117 - HS - Changing Sense of Distance
Published: Saturday, September 27, 2025Chapter 116 - What if Mahiro-chan continues growing as a girl
Published: Saturday, September 20, 2025Chapter 115 - Magical Girl Mahiro (2)
Published: Sunday, September 14, 2025Chapter 114 - Minato and Yuuta (2)
Published: Saturday, September 6, 2025Chapter 113 - LoveMaster Momiji
Published: Saturday, August 30, 2025Chapter 112 - Happy Birthday, Miyo
Published: Sunday, August 24, 2025Chapter 111 - Kemonomimi
Published: Saturday, August 16, 2025Chapter 110 - Matatabi (2)
Published: Saturday, August 9, 2025Chapter 109 - Matatabi
Published: Sunday, August 3, 2025Chapter 108 - Asahi x Miyo (8)
Published: Saturday, July 26, 2025Chapter 107 - My (Tiny) Dress-Up Bro 2
Published: Saturday, July 19, 2025Chapter 106 - My (Tiny) Dress-Up Bro
Published: Saturday, July 12, 2025Chapter 105 - Physical Contact (5)
Published: Monday, July 7, 2025Chapter 104 - Dirty Joke
Published: Sunday, June 29, 2025Chapter 103 - Golden Week
Published: Sunday, June 29, 2025Chapter 102 - 2 Girls, 1 Car (Fetish Warning)
Published: Sunday, June 22, 2025Chapter 101 - Immediate Sex
Published: Monday, June 16, 2025Chapter 100 - MomiHiro NTR
Published: Saturday, June 7, 2025Chapter 99 - Bratty Mahiro
Published: Sunday, May 25, 2025Chapter 98 - Smug Momiji
Published: Sunday, May 18, 2025Chapter 97 - Jujutsu Kai-Yuri-sen
Published: Saturday, May 10, 2025Chapter 96 - Reversal Play
Published: Wednesday, April 30, 2025Chapter 95 - EX - "Punishment"
Published: Sunday, April 27, 2025Chapter 94 - Pervert
Published: Sunday, April 27, 2025Chapter 93 - Drunk Futa (Not-so-SFW)
Published: Saturday, April 26, 2025Chapter 92 - Strange Behaviors
Published: Saturday, April 26, 2025Chapter 91 - Love Nectar (Very, VERY late Valentines)
Published: Friday, April 25, 2025Chapter 90 - Overdone Incest
Published: Friday, April 25, 2025Chapter 89 - Rammot Mihari
Published: Saturday, April 19, 2025Chapter 88 - HS - Setsubun Oni (NSFW?)
Published: Saturday, April 5, 2025Chapter 87 - HS - Housewife Mahiro
Published: Sunday, March 30, 2025Chapter 86 - Mihari x Kaede (2)
Published: Sunday, March 16, 2025Chapter 85 - Mihari x Kaede
Published: Saturday, March 1, 2025Chapter 84 - Mahiro's Research Project
Published: Saturday, January 18, 2025Chapter 83 - HS - Oyama Claus (2)
Published: Sunday, January 12, 2025Chapter 82.5 - HS - Mahiro and her Dress (2)
Published: Sunday, January 12, 2025Chapter 82 - Mahiro and her Dress
Published: Sunday, January 5, 2025Chapter 81.8 - Mahiro(♂) and Nayuta (3)
Published: Wednesday, January 1, 2025Chapter 81.5 - Mahiro(♂) and Nayuta (2)
Published: Sunday, December 29, 2024Chapter 81 - Mahiro(♂) and Nayuta
Published: Saturday, December 28, 2024Chapter 80.5 - HS - Pocky Game (2)
Published: Friday, December 27, 2024Chapter 80 - Reward
Published: Thursday, December 26, 2024Chapter 79.5 - Asahi x Miyo (7)
Published: Wednesday, December 25, 2024Chapter 79 - Asahi's first kiss
Published: Thursday, October 31, 2024Chapter 78 - Misleading
Published: Tuesday, October 29, 2024Chapter 77 - EX - Asahi's breast growth
Published: Thursday, October 24, 2024Chapter 76.5 - EX - Big brother
Published: Wednesday, October 23, 2024Chapter 76 - Lv. 50
Published: Tuesday, October 22, 2024Chapter 75.5 - EX - Private Lessons
Published: Sunday, October 6, 2024Chapter 75 - Newlyweds
Published: Wednesday, October 2, 2024Chapter 74 - HP Boost
Published: Tuesday, October 1, 2024Chapter 73 - EX - Change of Clothes
Published: Thursday, September 26, 2024Chapter 72 - EX - Shota Mahiro (2)
Published: Saturday, September 21, 2024Chapter 71 - Oversized
Published: Saturday, September 21, 2024Chapter 70 - Seduction (JK Gyaru Momiji ver.)
Published: Monday, September 9, 2024Chapter 69.5 - EX - Momiji in Wonderland
Published: Thursday, September 5, 2024Chapter 69 - (re) Temptation
Published: Wednesday, September 4, 2024Chapter 68 - EX - Temptation
Published: Tuesday, September 3, 2024Chapter 67 - EX - Arm wrestling
Published: Monday, July 8, 2024Chapter 66 - EX - Mahiro Crossdressing
Published: Sunday, July 7, 2024Chapter 65 - EX - Chest rub
Published: Saturday, July 6, 2024Chapter 64 - EX - Sadism
Published: Friday, July 5, 2024Chapter 63 - EX - Asahi x Miyo | Jealousy
Published: Friday, June 28, 2024Chapter 62 - EX - Angel or Devil?
Published: Friday, June 21, 2024Chapter 61 - EX - Embarassing Secrets
Published: Friday, June 14, 2024Chapter 60 - EX - Shota Mahiro
Published: Saturday, June 8, 2024Chapter 59 - EX - Mamahiro
Published: Friday, May 31, 2024Chapter 58 - Reunion
Published: Friday, May 24, 2024Chapter 57 - Birthday Proposal (Years Later...)
Published: Friday, May 17, 2024Chapter 56 - EX - Magical Girl Mahiro (Tentacle Warning)
Published: Friday, May 10, 2024Chapter 55 - Hidden Desires | Choco
Published: Friday, May 3, 2024Chapter 54 - EX - Homemade Choco
Published: Friday, April 26, 2024Chapter 53 - EX - Setsubun (NSFW Warning)
Published: Friday, April 19, 2024Chapter 52 - EX - Judo Match
Published: Friday, April 12, 2024Chapter 51 - Physical Contact (4)
Published: Saturday, April 6, 2024Chapter 50 - Weight Loss
Published: Saturday, March 30, 2024Chapter 49 - EX - Physical Contact (3)
Published: Friday, March 22, 2024Chapter 48 - EX - New Year's Kiss
Published: Friday, March 15, 2024Chapter 47 - Oyama Claus
Published: Friday, March 8, 2024Chapter 46 - Christmas Date
Published: Saturday, February 24, 2024Chapter 45 - EX - Minato and Yuuta
Published: Saturday, February 17, 2024Chapter 44 - Hidden Desires | Cheerleading
Published: Friday, February 9, 2024Chapter 43 - EX - Asahi x Miyo (5)
Published: Saturday, February 3, 2024Chapter 42 - EX - Asahi x Miyo (4)
Published: Friday, January 26, 2024Chapter 41 - Nayuta's (Late) Introduction
Published: Friday, January 19, 2024Chapter 40 - EX - Asahi x Miyo (3)
Published: Saturday, January 13, 2024Chapter 39 - EX - Romance with Amazake (Preview Ver.)
Published: Saturday, January 6, 2024Chapter 38 - EX - Pocky Game
Published: Friday, December 15, 2023Chapter 37 - Idol Recruitment
Published: Friday, December 8, 2023Chapter 36 - Trick or Treat
Published: Friday, December 1, 2023Chapter 35 - Momiji's Birthday Present
Published: Friday, November 24, 2023Chapter 34 - EX - AsaMiyo (Asahi x Miyo) (2)
Published: Saturday, November 18, 2023Chapter 33 - Hidden Desires
Published: Friday, November 3, 2023Chapter 32 - Breast Growth
Published: Friday, October 27, 2023Chapter 31 - EX - Mahiro and Nayuta
Published: Wednesday, October 18, 2023Chapter 30 - A Hug from Future Sister-In-Law
Published: Wednesday, October 11, 2023Chapter 29 - Kabedon (2)
Published: Tuesday, September 19, 2023Chapter 28 - EX - AsaMiyo (Asahi x Miyo)
Published: Tuesday, September 19, 2023Chapter 27 - EX - MaMiyo (Mahiro x Miyo)
Published: Friday, September 15, 2023Chapter 26 - Mahiro and Yuuta
Published: Sunday, September 10, 2023Chapter 25 - Surprise Kiss
Published: Sunday, September 10, 2023Chapter 24 - EX - Tug of War
Published: Friday, September 8, 2023Chapter 23 - EX - Physical Contact (2)
Published: Friday, September 8, 2023Chapter 22 - Bunny Suit (+ Wolf Suit)
Published: Monday, September 4, 2023Chapter 21 - What If... (2)
Published: Saturday, September 2, 2023Chapter 20 - Drunk Mahiro | First (Real) Kiss
Published: Friday, September 1, 2023Chapter 19 - EX - Drunk Mahiro
Published: Thursday, August 31, 2023Chapter 18 - EX - Wild Imagination
Published: Wednesday, August 30, 2023Chapter 17 - A Threesome
Published: Wednesday, August 30, 2023Chapter 16 - Preparation 2
Published: Sunday, August 27, 2023Chapter 15 - Role Reversal | Cosplay
Published: Sunday, August 27, 2023Chapter 14 - Jealousy
Published: Friday, August 25, 2023Chapter 13 - Cheerleading Support
Published: Friday, August 25, 2023Chapter 12 - EX - Massage Practice
Published: Wednesday, August 23, 2023Chapter 11 - EX - Birthday Proposal
Published: Wednesday, August 23, 2023Chapter 10 - Hakama
Published: Sunday, August 20, 2023Chapter 9 - EX - Love Hotel
Published: Sunday, August 20, 2023Chapter 8 - EX - Preparation
Published: Saturday, August 19, 2023Chapter 7 - Future Sister-In-Law
Published: Saturday, August 19, 2023Chapter 6 - What If
Published: Friday, August 18, 2023Chapter 5 - EX - First Kiss
Published: Friday, August 18, 2023Chapter 4 - EX - Physical Contact
Published: Friday, August 18, 2023Chapter 3 - Role Reversal
Published: Thursday, August 17, 2023Chapter 2 - Asahi's Sexual Assault
Published: Thursday, August 17, 2023Chapter 1 - Kabedon
Published: Wednesday, August 16, 2023Chapter 0 - Character Introduction
Published: Thursday, August 31, 2023More by Kotobuki (琴吹)
Onii-chan Is Done For! - Highschool ONIMAI (Doujinshi)
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 126
5 months ago