recursal/Fanatic-Fandom huggingface dataset:
Minato-kun is Done For? (doujinshi)

*See also: Minato-kun is Done For? (chapter)*

**Minato-kun is Done For?** (みなとくんはおしまい？, *Minato-kun Wa Oshimai*) is a spin-off doujinshi volume of *Onimai: I'm Now Your Sister!*. It was originally released on January 1, 2024.

## Contents

* Minato-kun is Done For?
* Offline Meeting Night

## Trivia

* This volume was released on the same day as Doujinshi Volume 27.
* This is the first doujinshi to be named after the main chapter that is included in it.
Mahiro's Time of the Month

**Mahiro's Time of the Month** (まひろと女の子の日, *Mahiro To Onnanoko No Hi*) is the second episode of the *Onimai: I'm Now Your Sister!* anime series. It originally aired on AT-X, Tokyo MX, and BS11 on January 12, 2023.

## Summary

As Mahiro stumbles through his new life as a girl, he finds himself gradually beginning to get into the swing of things. Realizing this, however, prompts him to try and reclaim some of his masculinity. He tries, in futility, to engage his core and do a sit-up, but ends up with a stomachache instead. Seeing his condition worsen rapidly before her eyes, Mihari has an epiphany. She realizes that his pain may actually have something to do with fact that almost a month has passed since Mahiro turned into a girl.

## Characters

* Mahiro Oyama
* Mihari Oyama
Mahiro and Kaede Get Wet in the Rain

**Mahiro and Kaede Get Wet in the Rain** (まひろとかえではあめにぬれ, *Mahiro To Kaede Wa Ameninure*) is the twenty-third chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Onio. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

## Summary

After Mahiro and Kaede get caught in a rainstorm, Mahiro invites her to dry off at her house.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki

## Trivia

* This chapter is written and illustrated by Onio.
Momiji's Nickname

* English
* Japanese

**Momiji's Nickname** (もみじのあだ名, *Momiji No Adana*) is a bonus chapter of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 7 of the doujinshi which was released on November 25, 2018.

## Summary

During Mahiro's first day of school, she asks Asahi what her nickname for Momiji is.

## Plot

During a class break, Asahi asks if she can copy Momiji's notes. Momiji smiles and asks Asahi if she fell asleep again, and Asahi just chuckles while Mahiro and Miyo look on silently.

Mahiro then asks Asahi if she has a nickname for Momiji like she does for her and Miyo (having given Mahiro the nickname 'Mahiron' and Miyo the nickname 'Miyochin'). Miyo realizes as well that she's never heard Asahi give Momiji a nickname.

Asahi tells them that she's had a nickname for Momiji since elementary school. Momiji remarks that it's embarrassing, so she asked Asahi not to use it.

This gets Miyo intrigued, and she says that she wants to know (the reason for never hearing about it before was because she went to a different elementary school from Asahi and Momiji).

Asahi remarks that her nickname for Momiji was 'Momijiro', causing Mahiro and Miyo to picture Momiji as a samurai.

Miyo laughs and remarks that it suits her. Asahi mentions that she at first thought Momiji was a boy, which is why she picked the name. Having made the same mistake, Mahiro agrees. All the while, Momiji feels embarrassed having her nickname finally exposed.

## Characters

* Mahiro Oyama
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki

## Trivia

* The events of this chapter take place during the events of "Mahiro's First Day", but after the events of "Miyo's Refusal".
* This chapter was released as the third part of Chapter 21.5 in Japan, but was reclassified as a bonus chapter for its English release.
Matsuri Oyama

**Matsuri Oyama** (緒山 (おやま)  まつり, *Oyama Matsuri*) is the mother of Mahiro and Mihari Oyama. She has been working overseas for the past few years and is thus unaware of Mihari's experiment on Mahiro.

## Appearance

Matsuri has long hair that stretches down to her middle back and appears to be the same color as Mahiro's. She was seen wearing a cardigan sweater and a necklace in a photograph taken when Mahiro and Mihari were young children.

## Personality

Not much is known about her personality, but it is known that she values physical copies of photos as she insisted on having prints made of all her family photos. She also took care of the flowerbeds outside her house before she went overseas.

## Etymology

* The name **Matsuri** means "festival" (**matsuri**)
* The name **Oyama** means "string" (緒) (**o**) and "mountain" (山) (**yama**) when literally interpreted. According to the author Nekotofu, the name comes from *oyama*, a term in kabuki that refers to male actors who play female roles.

## Trivia

* Before her official debut Nekotofu revealed in a Q&A that Matsuri has been working on a long overseas assignment for a trading company and has suggested that there might be a chance that she'll return to Japan temporarily.

## Appearances

### Manga

* Mahiro and the Little Garden
* Mahiro and the Photo Albums

## Source

1. ↑ Onimai Q&A campaign
2. ↑ Onimai Q&A campaign
Nayuta's Swimsuit

* English
* Japanese

**Nayuta's Swimsuit** (なゆたと水着, *Nayuta To Mizugi*) is Part 1 of Chapter 56.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 19 of the doujinshi which was released on December 31, 2021.

## Summary

Chitose recommends a swimsuit for Nayuta.

## Plot

Shortly after the shopping trip, Nayuta tells Chitose that she wants to buy a new swimsuit. Chitose notes that this is very unexpected.

Nayuta says that she wants the one that "onee-san" recommends, referring to Kaede. Chitose thinks that Nayuta is referring to her and recommends one of her own.

Chitose puts Nayuta in a full diving suit with a pair of goggles. Chitose is enthusiastic about it saying that it is functional out the wazoo and protects her from the sun as well.

Nayuta is not impressed, much to Chitose's surprise. As a result, they go with a different one.

## Characters

* Kaede Hozuki
* Nayuta Tenkawa
* Chitose Azuma

## Trivia

* The events of this chapter take place shortly after the events of the previous chapter "Mahiro and the Strategy Meeting".
Ghost Girl

The **Ghost Girl** is the spirit of an unnamed former female student who roams the hallways of Yotsuba University Affiliated Junior High School.

## Appearance

The unnamed Ghost Girl has the appearance of a middle-school girl with long black hair that stretches down to her back and bangs that hide her eyes. When her eyes are seen, they appear to glow and reveal a sinister expression. She is also seen wearing the girl's uniform for the middle school, having once supposedly been a student there herself.
Mahiro's Twisted Logic

* English
* Japanese

**Mahiro's Twisted Logic** (まひろと屁理屈, *Mahiro To Herikutsu*) is Chapter 26.5 of *Onimai: I'm Now Your Sister!.* It was originally published in Volume 9 of the doujinshi which was released on April 29, 2019.

## Summary

Mihari notes that learning how to bake cookies has made Mahiro even more girly.

## Plot

Soon after Mihari learns that Mahiro baked cookies in Home Ec., she remarks that by doing so Mahiro is really turning into a girl. Mahiro says that it is not so, telling Mihari that she is sorely mistaken.

Mahiro says that professional pastry chefs are overwhelmingly male, and that as a result baking is a manly profession. Mihari notes that that sounds pretty forced to her.

Mahiro goes a different route and realizes that only male characters can be gender-swapped into girls in fiction. She says that in that light, that makes her one of the most manly specimens in all of humanity.

Mihari just remarks that she doesn't think that anything about Mahiro is manly these days.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* The events of this chapter take place right before the end of "Mahiro the Patissier", specifically right after Mahiro tells Mihari that she baked cookies in Home Ec.
Rin Minakata

* Anime
* Manga

### Occupation

Health and Physical Education Teacher at Yotsuba University Affiliated Junior High School

## Anime

### Voiced by

Yūki Yamamoto

**Rin Minakata** (南方 りん, *Minakata Rin*) is Mahiro Oyama's Heath and Physical Education teacher at Yotsuba University Affiliated Junior High School. She is voiced by Yūki Yamamoto in the anime series.

## Appearance

Rin is a tall and athletic young woman with long dark red hair that she keeps tied up in a ponytail. In her first appearance she was seen wearing a tracksuit. During swim class she wore a jacket over one of the school's one-piece woman's swimsuits.

## Personality

Rin is an energetic and determined woman who loves athletics and works hard to get her students into shape to the best of her ability. Even though she does her best to push everyone, she is not entirely heartless. She is willing to let people sit out or leave early should an emergency arise, as shown when she let Mahiro not run laps and again when she let Mahiro exit the pool due to her supposedly getting her period both times.

## Etymology

* The name **Rin** means "dignified, severe, cold" (*凛*) (**rin**).
* The name **Minakata** means "south" (南) (**mina**) and "direction" (方) (**kata**).

## Appearances

### Manga

* Mahiro's Difficult Class
* Mahiro's Big Secret (Part 1)
* Mahiro and the School Physical
* Mahiro and Swim Class (Part 1)
* Mahiro and Swim Class (Part 2)
* Mahiro's Field Day
Mahiro's Perm

* English
* Japanese

**Mahiro's Perm** (まひろとパーマ, *Mahiro To Pāma*) is Part 2 of Chapter 18.5 of *Onimai: I'm Now Your Sister*. It was originally published in Volume 6 of the doujinshi which was released on August 12, 2018.

## Summary

The morning after the embarrassing incident, Kaede uses her curling iron to give everyone waves in their hair.

## Plot

The next morning, Kaede hums to herself while using a curling iron. Mahiro asks her what it is, and Kaede tells her that she is putting waves into her hair.

Mahiro is amazed that Kaede does it herself, and Kaede asks Mahiro if she's interested. Mihari tells Kaede how they got Mahiro a perm at the salon a while back and that she really liked it. Mihari shows Kaede some pictures, despite Mahiro's protests, and Kaede remarks that it is so cute. Kaede remarks how salons are expensive and offers to do it herself this time. Mahiro is overjoyed.

Kaede gives Mahiro a perm, and Mahiro beams at how fluffy her hair is now. Momiji laughs in relief, wondering how she could've ever thought that Mahiro was a boy. Kaede then suggest to a startled Momiji that they try it on her as well.

The result does not come out well. Mahiro can't recognize Momiji, and Kaede admits that it must work better on long hair. Momiji has nothing to say to them.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki

## Trivia

* The events of this chapter take place directly after the events of "Mahiro's Panic! At the Hot Spring (Part 2)".
* Mihari references when Mahiro got a perm at the salon in "Mahiro Visits the Salon".
Mahiro and the Terrifying Secret Room

**Mahiro and the Terrifying Secret Room** (まひろと恐怖の密室, *Mahiro To Kyōfu No Misshitsu*) is the eleventh chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Kometsubu. It was originally published as part of Volume 1 of the anthology series on May 27, 2021.

## Summary

Mahiro and Mihari become trapped in an elevator on a hot day while buying swimsuits.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter is written and illustrated by Kometsubu.
Mihari's Wardrobe Afterwards

* English
* Japanese

**Mahiri's Wardrobe Afterwards** (その後のみはりとお洋服, *Sonogo No Mihari To Oyopuku*) is a bonus chapter of *Onimai: I'm Now Your Sister*. It was originally published exclusively in Volume 2 of the manga which was released on January 26, 2019 in Japan, and October 5, 2021 in North America.

## Summary

Mihari and Kaede reflect on how much things have changed for Mihari in terms of fashion.

## Plot

Mihari and Kaede are sitting at a table drinking coffee. Kaede asks Mihari if she really handles all of Mahiro's outfits. Mihari remarks that if she doesn't, Mahiro will just wear the same thing every day. Kaede sheds a tear, in disbelief that the same Mihari she knew is now picking out clothes for other people, and good looking clothes at that. Mihari points out that she's learned a lot since then.

Mihari points out that it's not like she was never interested in fashion, saying that she read fashion magazines all the time and that she even has her favorite brands and designers. Kaede asks her then why she never then puts that knowledge to good use, as she wears that same lab coat everywhere. Mihari just claims that she doesn't think that cute clothes look good on her.

It's revealed that the day after the shopping trip, the two were walking down the hall at school. Mihari remarked how she loves uniforms as you never have to think about what to wear. Kaede wonders if something happened to Mihari after they went shopping.

## Characters

* Mihari Oyama
* Kaede Hozuki
Oyama Residence

The **Oyama Residence** is the house in Onimai where Mahiro and Mihari Oyama live. It was also previously occupied by their mother before she began working overseas, though it is still presumably in her name.

## Occupants

* Mahiro Oyama
* Mihari Oyama
* Mrs. Oyama (former)

## Locations

### Outside/Front of House

Outside the front door is a small enclosed deck with a few steps leading to the street, there is also a yard enclosed in a fence. On the right sidee of the house is a car parked beneath a canopy with a gate that leads out of the yard. Around the left side of the house is several trees and flowerbed, the latter of which was once tended to by Mrs. Oyama, but is now being taken care of by Mihari and Mahiro. The two also used this area to grow watermelons in pots when Mahiro expressed interest in doing so.

### Living Room/Kitchen

Coming into the house, there is a hallway that leads to a connected kitchen and living room area. It is here that Mihari prepares the meals of the house, and Mahiro tends to goof off when not in her room. There is also a hallway that connects to the bath and a stairway that leads upstairs.

### First Bathroom

The bathroom is a standard style Japanese bath with a shower and a separate tub all in the same room. Outside the bath is a sink and a toilet. Mahiro and Mihari use this area to bathe.

### Second Bathroom

On the second floor is a second bathroom, consisting of a small room with a sink and toilet. Mahiro and Mihari use this when they are upstairs.

### Mahiro's Room

At the end of the hall is Mahiro's room. It contains shelves filled with manga, figurines, and video games. On one wall lies a TV next to a computer, both of which Mahiro uses to play games. The room is typically kept in an untidy state, but Mahiro occasionally cleans it up if Mihari orders it or if she's expecting company.

## Trivia

* When Asahi was occupying the restroom upstairs during her birthday party, Mahiro didn't go anywhere else even though this house is supposed to have two toilets (one upstairs and one downstairs). The author Nekotofu mentions this contradiction, jokingly saying that the toilet on the first floor must have been out of order.
Mahiro and the Typhoon

**Mahiro and the Typhoon** (まひろと台風, *Mahiro To Taifū*) is the twenty-fourth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Minamito. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

## Summary

Mahiro enjoys a day inside when a typhoon strikes.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki

## Trivia

* This chapter is written and illustrated by Minamito.
Laundry

**Laundry** (クリーニン, *Kurīnin*) is a laundromat and dry cleaner shop in Onimai. Mahiro was sent here by Mihari to pick up some clothes that she had dry cleaned.

## Trivia

* Although the hiragana for the store translates to "Cleaning", the official English translation of the manga gives the name of the store as "Laundry".
Mahiro's Confusing New Body

Disambiguation page for Mahiro's Confusing New BodyThe following is a list of links to pages that might share the same title.Please follow one of the disambiguation links below or search to find the page you were looking for if it is not listed. If an internal link led you here, you may wish to change the link to point directly to the intended article.
**Mahiro's Confusing New Body** may refer to:

* Mahiro's Confusing New Body (manga) - Chapter 1 of the *Onimai: I'm Now Your Sister!* manga series.
* Mahiro's Confusing New Body (anime) - Episode 1 of the *Onimai: I'm Now Your Sister!* anime.
Onii-chan's Muscles Are Done For

**Onii-chan's Muscles Are Done For** (お兄ちゃんの筋肉はおしまい, *Onii-chan No Kin'niku Wa Oshimai*) is the forty-eighth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Cool Kyōshinsha. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Summary

Mahiro decides to do some strength training.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Momiji Hozuki
* Asahi Oka
* Miyo Murosaki

## Trivia

* This chapter is written and illustrated by Cool Kyōshinsha.
Mrs. Niwasaki

**Mrs. Niwasaki** (庭先, *Niwasaki*) was the mother of Anna Niwasaki. Anna supposedly became interested in gardening thanks to her, and she occasionally appears as a guardian angel to her daughter to give her advice.

## Appearance

Mrs. Niwasaki bears a striking resemblence to her daughter, except she has blonde hair and blue eyes instead of red hair and green eyes. She is shown to wear a long-sleeved white dress and has a set of angel wings and a halo.

## Etymology

* The name **Niwasaki** means "garden" (庭) (**niwa**) and "destination" (先) (**saki**).

## Trivia

* Mrs. Niwasaki appears as a supporting character in *Niwasaki Garden*, another series by Nekotofu that is also avaiable on Pixiv. The chapter "Mihari and the Drinking Party" retroactively establishes that the series is set in the same universe as *Onimai: I'm Now Your Sister!* as her daughter Anna appears as a waitress in the chapter.
Onimai: I'm Now Your Sister!

Disambiguation page for Onimai: I'm Now Your Sister!The following is a list of links to pages that might share the same title.Please follow one of the disambiguation links below or search to find the page you were looking for if it is not listed. If an internal link led you here, you may wish to change the link to point directly to the intended article.
***Onimai: I'm Now Your Sister!*** (also referred to as ***Onii-chan wa Oshimai!***) can refer to:

* *Onimai: I'm Now Your Sister!* (manga) - The original manga source material.
* *Onimai: I'm Now Your Sister!* (anime) - The anime adaptation of the manga.
Mahiro and the Maid's Ettiquette

**Mahiro and the Maid's Ettiquette** (まひろとメイドのお作法, *Mahiro To Meidono Osahō*) is the fiftieth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Norito Azazuki. It was originally published as part of Volume 4 of the anthology series on November 27, 2023.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki
* Nayuta Tenkawa
* Satsuki Tadaka
* Minori Shiina
* Yuta Sakurada
* Minato Senkawa

## Trivia

* This chapter is written and illustrated by Norito Azazuki.
Mahiro and the Complete Set

**Mahiro and the Complete Set** (まひろとフルコンプ, *Mahiro To Furukonpu*) is the forty-third chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Majoccoid. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Miyako Nagase

## Trivia

* This chapter is written and illustrated by Majoccoid.
Mahiro and Clinginess

**Mahiro and Clinginess** (まひろとひっつき虫, *Mahiro To Hittsukimushi*) is the thirty-seventh chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Onio. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Summary

Mahiro, Mihari, Kaede, and Momiji hang out together overnight

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki

## Trivia

* This chapter is written and illustrated by Onio.
Mahiro and the Homemade Chocolate

* English
* Japanese

**Mahiro and the Homemade Chocolate** (まひろと手作り, *Mahiro To Tedzukuri*) is Chapter 33.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 11 of the doujinshi which was released on December 30, 2019.

## Summary

Mahiro and her friends compare their chocolate hauls from Valentine's Day.

## Plot

While giving out all their chocolate, Mahiro and her friends sit at their desks to compare their hauls.

Momiji remarks to Asahi that her chocolate is always so good, and that she looks forward to it every year. Asahi says that it is because she always scouts out the chocolate maker that she knows Momiji will like. Mahiro and Miyo giggle, noting how sweet that is.

In return, Momiji gives some of her chocolate to Asahi. Mahiro tells Asahi that it's apparently homemade, and Asahi beams at it, noting that it's the best. As the two continue to chatter, Mahiro smiles and notes what a pleasant interaction this is.

Mahiro apologizes for hers being store bought, but Momiji tells her not to worry about it saying that it's fine. She notes that it's the thought that counts, which causes Mahiro to cringe as she let Mihari do all the work.

Mahiro collapses with pain in her chest. She decides that if this happens again, she'll try making her own chocolate as well. She decides that she doesn't want to ask Mihari for help, and that she can't ask Kaede for help since she's so worked with Momiji.

Miyo is touched by the whole thing and thinks to herself that Asahi might have the upper hand thanks to her chocolate, but that Mahiro won't give up without a fight. Ultimately, Miyo gets excited over nothing as Mahiro is not trying to usurp anyone.

## Characters

* Mahiro Oyama
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki

## Trivia

* The events of this chapter take place during the events of the previous chapter "Mahiro on Valentine's Day".
Mahiro and the Imaginary

**Mahiro and the Imaginary** (まひろとイマジナリー, *Mahiro To Imajinarī*) is the tenth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Misaki Mori. It was originally published as part of Volume 1 of the anthology series on May 27, 2021.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki
* Nayuta Tenkawa
* Chitose Azuma

## Trivia

* This chapter is written and illustrated by Misaki Mori.
Satsuki Tadaka

* Anime
* Manga

### Occupation

Middle School Student at Yotsuba University Affiliated Junior High School:* Class 1-B (Start of series - Chapter 38.5)
* Class 2-B (Chapter 39 - Present)

## Anime

### Voiced by

Miyu Takatsuki

**Satsuki Tadaka** (髙田 (たかだ)  さつき, *Takada Satsuki*) is a middle school student at Yotsuba University Affiliated Junior High School, a classmate of Mahiro Oyama, and the best friend of Minori Shiina. She and Minori are always seen standing in the way of boys when said boys gang up on Mahiro and the other girls in class. Despite claiming a hatred for boys, Satsuki picks on them because she secretly likes them, Yuta in particular. She is voiced by Miyu Takatsuki in the anime series.

## Etymology

* The name **Satsuki** means "little; small" (小) (**sa**) and "moon" (月) (**tsuki**).
* The name **Tadaka** means "high" (髙) (**ta**) and "field" (田) (**daka**).

## Appearances

### Manga

* Mahiro's First Day
* Mahiro's Difficult Class
* Mahiro and Conversation
* Mahiro and the Allure of Bare Legs
* Mahiro on Valentine's Day
* Mahiro Pretties Up
* Mahiro and the Perfume
* Mahiro and Swim Class (Part 1)
* Mahiro, the Sun, and the Northern Wind
* Girls and Boys
* Mahiro and the Midsummer Romance
* Mahiro's Second Semester Debut
* Mahiro and the Charming School Festival (Part 1)
* Mahiro and the Charming School Festival (Part 2)
* The Boys' Shift Change
* Mahiro's Field Day
Minato-kun is Done For? (chapter)

*See also: Minato-kun is Done For? (doujinshi)*

* Official
* Preview

**Minato-kun is Done For?** (みなとくんはおしまい？, *Minato-kun Wa Oshimai*) is a special chapter of *Onimai: I'm Now Your Sister!*. A special preview of the chapter was released on Nekotofu's Fanbox on November 10, 2023, with the full version being released exclusively in the spin-off doujinshi of the same name on January 1, 2024.

## Summary

Minato is coerced by his older sister Kanata into filling in for her at an IRL meetup for members of an online guild in an MMO that she plays.

## Characters

* Yuta Sakurada
* Minato Senkawa
* Kanata Senkawa
* Ponta
* Shiori
* Lucas
* Risachii

## Trivia

* First appearances of Kanata Senkawa, Ponta, Shiori, Lucas, and Risachii.
* This is the first chapter of the series that has ever had a preview version released before the full version.
* The plot of this chapter could have possibly been inspired by another gender-bender manga *I Cross-Dressed for the IRL Meetup* which is also published by Kodansha.
Mahiro and the Other "Mahiros"

**Mahiro and the Other "Mahiros"** (まひろと様々な「まひろ」, *Mahiro To Samazamana `Mahiro`*) is the twenty-second chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Imaru Adachi. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

## Summary

Mahiro analyzes which forms of herself she has truly become.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki

## Trivia

* This chapter is written and illustrated by Imaru Adachi.
Mahiro's Lunch

* English
* Japanese

**Mahiro's Lunch** (まひろとお弁当, *Mahiro To Obentō*) is a bonus chapter of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 8 of the doujinshi which was released on February 17, 2019.

## Plot

Mahiro and her friends are about to eat lunch. Mahiro says that they should eat, and notes that lunch is the highlight of her day, and Asahi agrees with her. Momiji opens up her boxed lunch, and Mahiro notes that it is even cuter than usual, though Momiji isn't so sure. Momiji mentions that Kaede made it for her today, and Mahiro goes over the moon over the fact that that is Kaede's home cooking.

Mahiro remarks that that is not fair and that she's so jealous, asking Momiji if she can at least taste it. Momiji agrees and gives Mahiro a single bite. Miyo sees this and offers thanks for the delicious meal, confusing Momiji since Miyo hasn't even touched her lunch.

Mahiro tells Momiji that she is jealous of Momiji having such a good older sister, while Momiji remarks that she should be saying the same thing about Mihari. She points out that Mihari is smart and cool and made a boxed lunch for Mahiro. Mahiro considers this, and realizes that Mihari does make her lunch every single morning.

Asahi calls it nice, saying that her brother hasn't made her lunch once. Mahiro jumps at that and remarks that that's just how boys are, while knowing inside that that hits a little too close to home. Asahi mentions that her brother does however help her with her homework. Mahiro feels even worse and Momiji asks her why she is flinching at that.

Miyo mentions that she is jealous that they have siblings at all, pointing out that she's an only child. Mahiro says that she always figured that it would be easier on Miyo that way, to which Miyo points out that everyone with siblings says that. Mahiro suggests that Miyo could always find a nice upperclassman to be her "onee-sama" and swear an oath to become sœurs. Mahiro says that she figured that Miyo would be into that. Miyo recognizes that as the plot of a light novel yuri series, and Miyo is surprised Mahiro knows about it, especially considering that was only popular before they were all born.

Mahiro freaks out, and Momiji notices that Mahiro is pretty emotional today. This leads her to wonder if Mahiro is getting her period.

## Characters

* Mahiro Oyama
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki

## Trivia

* The term sœurs means "sisters".
* As noted in the manga, the plot that Mahiro mentioned is the plot of *Maria Watches Over Us*, a light novel series with an anime adaptation from 2004.
* This chapter was originally released as the first part of Chapter 24.5 in Japan, but was reclassified as a bonus chapter for its English Release.
Mahiro and the Lottery

**Mahiro and the Lottery** (まひろと宝くじ, *Mahiro To Takarakuji*) is the forty-fourth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Mikumi Yuuchi. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki
* Nayuta Tenkawa
* Mai Yasaka
* Miyako Nagase

## Trivia

* This chapter is written and illustrated by Mikumi Yuuchi.
Kaede's Concern

* English
* Japanese

**Kaede's Concern** (かえでの心遣い, *Kaede No Kokorodzukai*) is a bonus chapter of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 7 of the doujinshi which was released on November 25, 2018.

## Summary

After Mahiro cringes from her first day of school, Mihari calls Kaede for advice.

## Plot

Mahiro is under the covers, cringing over wetting herself in front of Mihari. To get some advice about comforting a younger sister, Mihari decides to give Kaede a call.

Kaede tells Mihari not to scold Mahiro as she's already more than upset about this. She also points out that the thing likely happened to Mihari when she was young. She says to pretend that it never happened and Mihari thanks her for the advice, noting that this is what a real older sister is like. Kaede says "Of course" and hangs up.

Kaede remarks that Mahiro sure does like to cut things close, reminded of the similar incident at the movie theater. Momiji who is in the same room asks what she said about Mahiro, but Kaede tells her that it was nothing.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki

## Trivia

* The events of this chapter take place directly after the events of "Mahiro's First Day".
* Kaede references the incident where Mahiro wet herself while waiting on line for the bathroom at the movie theater during the events of "Mahiro and Kaede's Secret".
* This chapter was released as the fourth part of Chapter 21.5 in Japan, but was reclassified as a bonus chapter for its English release.
Mahiro's Close Encounter

**Mahiro's Close Encounter** (まひろと未知との遭遇, *Mahiro To Michi To No Sōgū*) is the third episode of the *Onimai: I'm Now Your Sister!* anime series. It originally aired on AT-X, Tokyo MX, and BS11 on January 19, 2023.

## Summary

Mahiro makes a mad dash for the bathroom, but when he opens the door, he finds the facilities are already occupied by a high school girl he's never met. This bold fashionista turns out to be Kaede, Mihari's old classmate from middle school. Mahiro is initially a little nervous around her, but as he gets to know her, he learns how much of a nice person she is and becomes quite attached to her. Then, out of nowhere, Kaede asks "You've never done it before, have you?" and begins to scooch closer to a puzzled Mahiro. I wonder what she's about to do next...

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Hiyori Yosaki
* Raika Nanami
Nodoka Fushimi

* Anime
* Manga

### Occupation

Middle School Student at Yotsuba University Affiliated Junior High School:* Class 1-B (Start of series - Chapter 38.5)
* Class 2-B (Chapter 39 - Present)

### Friends

Nemu Fujimi
Aoi Tachikawa

## Anime

### Voiced by

Rina Tsukishiro

**Nodoka Fushimi** (伏見 (ふしみ)  のどか, *Fushimi Nodoka*) is a middle school student at Yotsuba University Affiliated Junior High School, a classmate of Mahiro Oyama, and a friend of Nemu Fujimi and Aoi Tachikawa. She is voiced by Rina Tsukishiro in the anime series.

## Early Life

During grade school, Nodoka was in the same class as Momiji Hozuki, Asahi Ōka, Nemu Fujimi, Aoi Tachikawa, Akira Nakai, Yuta Sakurada, and Minato Senkawa. On her first day, she was seen conversing with Nemu.

Eventually, Nodoka got into Yotsuba University Affliliated Junior High School ending up in Class 1-B.

## Etymology

* The name **Nodoka** can mean:
	+ "harmony, peace" (和) (**nodoka**).
	+ "tranquil, calm, quiet, peaceful" (長閑) (**nodoka**).
	+ Can be formed by combining:
		- "warm" (和, 温), "permanence, leisure" (悠), or "ambition, hope, desire" (望) (**nodo**) with
		- "flower" (花 or 華), "incense, smell, perfume" (香), or "beautiful, good, excellent" (佳) (**ka**).
* The name Fushimi means "lying down" (伏) (**fushi**) and "look" (見) (**mi**).

## Appearances

### Manga

* Mahiro's First Day
* Mahiro's Difficult Class
* Mahiro and Conversation
* Mahiro and the Guidance of the Stars
* Mahiro's Surprise Party
* Mahiro Pretties Up
* Mahiro's Big Secret (Part 1)
* Mahiro and the Seasonal Attire
* Mahiro and Swim Class (Part 1)
* Mahiro, the Sun, and the Northern Wind
* Mahiro's Second Semester Debut
* Mahiro and the Charming School Festival (Part 1)
* Mahiro and the Charming School Festival (Part 2)
* The Boys' Shift Change
* Mahiro's Field Day
Mihari's Sticker Memories

* English
* Japanese

**Mihari's Sticker Memories** (みはりとシールの思い出, *Mihari To Shiru No Omoide*) is Chapter 46.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 16 of the doujinshi which was released on February 21, 2021.

## Summary

Mihari recalls her own time collecting stickers when she was young.

## Plot

Mahiro decides to take the hazard stickers that Mihari offered her, and Mihari tells her to have at it. Mahiro decides that they have to trade stickers and tries to decide which one to give her, despite Mihari insisting that its okay.

Mahiro finds a cute one and gives it to Mihari, noting that she likes "little wierdos" like this one. Mihari is touched and begins to remember to how she first got into sticker collecting.

In a flashback several years ago, Mahiro took Mihari to Hasegawa Stationary to get some notebooks. Mihari noticed some stickers being sold and was immediately enamored by them. Mahiro noticed Mihari's interest and decided to buy them for her since they only cost ¥200. Mahiro gave them to Mihari, telling them to take good care of them. Mihari was delighted and immediately fell in love with them, feeling especially happy towards Mahiro for buying them for her.

In the present, Mihari adds the sticker to her collection and sighs in delight noting that it has been way too long. Mahiro doesn't know what she means by that.

Mihari is once again shown in the past, loving the kind things that Mahiro did for her.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* The events of this chapter take place during the events of the previous chapter "Mahiro and the Sticker Collection", taking place while Mahiro is at home, before she goes to school for the sticker exchange.
* The ¥200 that Mahiro spends on the stickers for Mihari is the equivalent of $1.47 USD.
Mahiro Returns a Favor

**Mahiro Returns a Favor** (兄のおんがえし, *Ani No On Ga Eshi*) is the sixteenth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Namori. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

## Summary

To show Mihari some gratitude for all she does, Mahiro decides to make her breakfast.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Momiji Hozuki
* Miyo Murosaki

## Trivia

* This chapter is written and illustrated by Namori.
Rain With a Chance of Brother

**Rain With a Chance of Brother** (兄模様, *Ani Moyō*) is the thirty-third chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Namori. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Summary

Mihari realizes that she forgot to bring an umbrella with her just as it starts to rain.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter is written and illustrated by Namori.
Mihari and Her Comrade

**Mihari and Her Comrade** (みはりと相棒, *Mihari To Aibō*) is the twelfth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Shinichi Yuki. It was originally published as part of Volume 1 of the anthology series on May 27, 2021.

## Summary

Mihari grows a "comrade" of her own after accidently drinking her latest drug batch.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki

## Trivia

* This chapter is written and illustrated by Shinichi Yuki.
Mahiro's Sibling Bathtime

* English
* Japanese

**Mahiro's Sibling Bathtime** (まひろと兄妹風呂, *Mahiro To Kyodai Furo*) is Chapter 27.5 of *Onimai: I'm Now Your Sister!.* It was originally published in Volume 9 of the doujinshi which was released on April 29, 2019.

## Plot

As Mahiro sits in the bathtub looking directly at Mihari, Mihari feels embarrassed. Mihari notes that it is too late to say anything, but being observed this closely is a bit strange.

Mahiro remarks to Mihari that she sure has gotten bigger. Mihari is shocked by that statement and covers her chest, calling Mahiro a creep. Mahiro says that that isn't what she meant, saying that she remembers how they used to bathe together as kids. She adds that it was in this very same bathtub, and that she was just thinking about it. Mihari is touched and gets in the tub as well. She notes that in that case, Mahiro has gotten smaller. Mahiro angrily asks her who's fault that is.

Meanwhile, Asahi remarks to Miyo and Momiji that it seems that the three of them will be going together. Miyo becomes aroused, and Momiji asks if doing that will be a little cramped.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* The events of this chapter take place directly after "Mahiro's Sleepover (Part 1)".
Mahiro is in Big Trouble

**Mahiro is in Big Trouble** (まひろ、大ピンチ, *Mahiro, Dai Pinchi*) is the twenty-ninth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Morikokko. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

## Summary

Mahiro's "comrade" grows back in the middle of class.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki
* Nayuta Tenkawa
* Yuta Sakurada
* Minato Senkawa

## Trivia

* This chapter is written and illustrated by Morikokko.
Onii-chan Wants To Find It!

**Onii-chan Wants To Find It!** (お兄ちゃんは見つけたい！, *Onii-chan Wa Mitsuketai!*) is the twenty-first chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Mikumi Yuuchi. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

## Summary

Mihari loses her hairclip, and Mahiro tries to help her find it.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter is written and illustrated by Mikumi Yuuchi.
Mahiro and the Visible Undergarmets

**Mahiro and the Visible Undergarmets** (まひろと見せパン, *Mahiro To Misepan*) is a special chapter of *Onimai: I'm Now Your Sister!*. It was originally published in Collected Works Volume 5 which was released on August 31, 2022.

## Summary

Mahiro and Mihari discuss unique types of female undergarments.

## Plot

Mahiro walks throught the living room with a drink. Mihari notices that Mahiro is wearing bloomers and tells her not to walk around like that. Mahiro is confused and asks if it's fine, as they're kind of made for that. Although Mihari gets Mahiro's point, she points out that it doesn't mean that she should show them to everyone.

Mihari is amazed, as Mahiro was previously emabrassed to wear the spankies she got her. Mahiro notes that she has no issue with these bloomers, and that she just can't roll with such tight underwear as the spankies. Mihari gets it, as bloomers as a bit more like pants. Mahiro admits though that the lacing of the cuffs of the bloomers does bother her, but also admits that they're very cute.

Mihari suggests and alternative and has Mahiro try on a set of petticoat pants. Mahiro smiles and admires how they look on her, admitting that since they feel so much like boxer shorts she's right at home. Mahiro ultimately feels embarrassed though, admitting that they're more like panties at the end of the day.

Mihari, who is having fun with this, moves on to the next item and has Mahiro put on a pannier. Mahiro feels very embarrassed and asks if this is basically just a skirt, to which Mihari confirms that despite everything it is still considered underwear. She explains that it's the kind of underwear that you wear to fluff up the underside of a skirt. Mahiro full understands, realizing that that she's seen these before in an anime. Mihari explains that there's so many frills that nothing's visible underneath so one can be at ease. When Mihari tries to peek to confirm this, Mahiro forces her legs together and tells her to quit it.

Mihari says with joy that more importantly it's flat out cute, though Mahiro admits that she wasn't exactly looking for cuteness here. She also admits that they might be more undependable, and Mihari asks her why. Mahiro points out that when it's all said and done it's not even covered, saying that it's practically like she's wearing a skirt while going no-pan.

Mihari remains silent for a few seconds, then tells Mahiro to stand up for a second. Mahiro does so, despite being confused, only for Mihari to lift up the front of the pannier. As Mahiro squeals in horror, Mihari gets a big smile on her face. She explains to Mahiro that she's supposed to don this kind of underwear over her panties (Mahiro wasn't wearing anything underneath). As Mahiro is shocked and embarssed, she thinks to herself how girl's fashion continues to escape her.

## Characters

* Mahiro Oyama
* Mihari Oyama
Mahiro and the Comrade's Return Again

* English
* Japanese

**Mahiro and the Comrade's Return Again** (まひろと凱旋再び, *Mahiro To Gaisen Futatabi*) is Chapter 50.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 17 of the doujinshi which was released on May 2, 2021.

## Summary

Mahiro decides to take advantage of the fact that her "comrade" has temporarily returned.

## Plot

Shortly after taking a new dose of the feminization drug, Mahiro goes to her room all gloomy. As she begins to strip out of her school unifrom, she sighs and notes that there is no use crying over taken medicine, and bids farewell to her "comrade", hoping to see it again.

As she's left in nothing but her underwear and shirt, Mahiro realizes that her "comrade" still lives, remembering that the medicine takes effect overnight.

Mahiro starts to grin devilishly. She notes that she is in her own private room and in peak condition, noting that this is the opportunity of a lifetime. She fires up her computer and opens up an eroge game in delight.

Mahiro gets excited when the eroge begins, but notes that her "comrade" isn't responding. She asks her "comrade" what's wrong and yells "on your feet soldier", but nothing happens much to her shock.

Mahiro is then seen crying under her covers. Mihari tries to comfort her, saying that it was the medicine's fault.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* The events of this chapter take place directly after the events of the previous chapter "Mahiro and Swim Class (Part 2)".
* Mahiro references when Mihari told her that the medicine's effect activates overnight in "Mahiro's Panic! At the Hot Spring (Part 2)".
* This chapter marks the second time that Mahiro tries, and fails to take advantage of her comrade after it returns. The first time was in "Mahiro and the Comrade's Return".
Mahiro's Cheer Wear

* English
* Japanese

**Mahiro's Cheer Wear** (まひろと晴れ姿, *Mahiro To Haresugata*) is Chapter 69.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 23 of the doujinshi which was released on December 31, 2022.

## Plot

Coming home from field day, Mahiro announces that she's home. Mihari welcomes Mahiro back and asks how it went. Mahiro flashes a 'V for Victory' hand sign and says that her team won the day. She then lies on the couch and notes that winning doesn't mean anything to her, but that it does feel nice to win for once. Mihari is impressed and suggests that they have steak tonight as a reward. Mahiro asks if Mihari thinks that she's a little kid.

Mihari notes that she wishes that she could've seen it, but knows that crashing a junior high field day is a little too helipcopter parent. Mihari then says that she should've made Mahiro a grade-schooler, which Mahiro takes offense to. Mihari admits that she was just kidding, but Mahiro tells her not to joke about stuff like that.

Mahiro leans back on the couch in relief, noting that she's actually glad that Mihari didn't come as she didn't want Mihari to see her in that cheer uniform. All of a sudden, Mihari gets a ding on her phoe and squeaks, which Mahiro takes notice of. Mihari just recieved a picture of Mahiro in the cheer uniform and calls it very cute much to Mahiro's shock.

Mihari is amazed that Mahiro was a cheerleader at the event and wants to know everything. Mahiro asks Mihari where she even got that photo. It is revealed that Momiji at the event asked Mahiro if she could take a picture of her in the cheer uniform. Momiji then sent it to Kaede who loved it so much that she sent it to Mihari. Mahiro realizes that it went through the guardian network.

Mihari suddenly starts crying, which Mahiro says isn't necessary. Breaking out into a full wail, Mihari wishes that she could've seen it in person, much to Mahiro's exasperation.

To appease Mihari, Mahiro dresses up in the cheer unifrom again for her, noting that it's fine since Mihari wanted to see it so bad that she was in tears. Mihari is left in shock at being able to see it in person.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki
* Nayuta Tenkawa
Onii-chan Wants to Return!

**Onii-chan Wants to Return!** (お兄ちゃんは取り戻したい!, *Onii-chan Wa Torimodoshitai!*) is the thirty-ninth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Toyobayashi Sakane. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Summary

Mahiro decides to try and reclaim her dignity as a man and as an older brother.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki
* Nayuta Tenkawa

## Trivia

* This chapter is written and illustrated by Toyobayashi Sakane.
Onii-chan Wants to Have a Baby?!

**Onii-chan Wants to Have a Baby?!** (お兄ちゃんはうみたい！？, *Onii-chan Wa Umitai!?*) is the second chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Koume Fujichika. It was originally published as part of Volume 1 of the anthology series on May 27, 2021.

## Summary

Mahiro starts wondering what it would be like to have a baby.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki
* Yuta Sakurada
* Minato Senkawa

## Trivia

* This chapter is written and illustrated by Koume Fujichika.
Mahiro and the Ballet Class

**Mahiro and the Ballet Class** (まひろとバレエ教室, *Mahiro To Barē Kyōshitsu*) is the forty-fifth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Hami. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Summary

Mihari convinces Mahiro to take a ballet lesson.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter is written and illustrated by Hami.