recursal/Fanatic-Fandom huggingface dataset:
Mahiro and a Sleepy Day

**Mahiro and a Sleepy Day** (まひろと眠い日, *Mahiro To Nemui Hi*) is a special chapter of *Onimai: I'm Now Your Sister!*. It was originally published in Collected Works Volume 3 which was released on December 30, 2020.

## Summary

Mahiro accidently pulls an all-nighter playing *Lost Quest IX* on a school night.

## Plot

On Sunday, Mahiro plays away at *Lost Quest IX* in her bedroom. She is determined to beat the game in one shot, saying that she can't lose to a couple of young ones; Yuta and Minato.

After many hours of playing, Mahiro beats the game and sighs in relief that its finally over. She says that at long last she can go to sleep, and looks at her alarm to see when she'll have to wake up. Much to her shock, her alarm reads 6:52 AM, which is less than half an hour before she's normally supposed to get up for school.

In class, Mahiro is passed out across her desk due to not getting any sleep. Miyo asks what's wrong with her, and Momiji says that Mahiro is sleep deprived.

Asahi tells them to leave it to her, and attempts to lift Mahiro out of her seat. She says that if she just moves her body, her drowsiness will immediately disappear. When that doesn't work, Asahi decides to try a little trick, and begins tickling Mahiro from behind.

Although Mahiro stirs a bit, she still fails to wake up, leading Momiji and Miyo to realize that this is really something big.

Momiji puts her arm between Mahiro and Asahi and yells for Asahi to stop it already. Asahi is shocked that that didn't work, remarking that this was tougher than she thought. Momiji says that Mahiro looks pretty cute like this, and suggests that they just let her sleep it off. Asahi agrees and apologizes for trying to wake Mahiro up. In the seat in front of Mahiro, Nemu is also sleeping, albeit in an upright position.

Miyo gets out her tracksuit jacket and, with Momiji's support, puts it over Mahiro like a blanket to keep her warm.

Mari eventually comes around and asks Nemu a question. She tries to ask Mahiro a question as well, but can't bring herself to wake her up as she looks so adorable when she's asleep.

Sometime later, Mahiro finally wakes up and cries out "February!". She then yawns and notes that she slept well. She then realizes that everyone in class is staring at her with a smile, and Mari greets her. Mahiro just smiles, a bit embarrassed, and tries to think of how to respond. She realizes that it is good that she lives in such a gentle world.

Later, Asahi uses her tickling method on Nemu and manages to wake her up successfully with it.

## Characters

* Mahiro Oyama
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki
* Nemu Fujimi
* Nodoka Fushimi
* Aoi Tachikawa
* Yuta Sakurada
* Minato Senkawa
* Mari Nishinomiya

## Trivia

* Mahiro is shown playing *Lost Quest IX*, which she got in "Mahiro and Conversation", which shows that the events of this chapter take place after the events of that chapter.
Mahiro Helps Out

* English
* Japanese

**Mahiro Helps Out** (まひろとお手伝い, *Mahiro To Otetsudai*) is Chapter 10.5 of *Onimai: I'm Now Your Sister*. It was originally published exclusively in Volume 1 of the manga which was released on June 27, 2018 in Japan, and August 31, 2021 in North America.

## Summary

To thank Mahiro for helping her out the other day, Mihari gives her a chore card with a promise of an increased allowance if the entire card is filled out.

## Plot

Mihari tells Mahiro that she has something to thank her for helping out while she was sick. Mahiro is excited and believe that it is another game currency card, but Mihari instead gives Mahiro a chore helper card.

Mahiro gets upset, asking Mihari if she looks like a grade-schooler to her. Mihari just tells Mahiro that if she fills out the entire card, she'll increase Mahiro's allowance. Mahiro is shocked, but goes along with it for the sake of more allowance.

Sometime later, Mahiro has cleaned the bathroom and Mihari thanks her by putting another sticker on the card. Mihari notices that Mahiro has filled out the entire card and gives her the reward as promised. The increase turns out to be an measely 300¥.

Upset, Mahiro wraps herself in a blanket and goes on strike for higher wages, declaring that it is is what you lose when your work cannot be repaid. Mihari realizes that maybe this was a bad move.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* Mihari references when Mahiro helped her out when she was sick in "Mahiro the Own-Home Security Guard".
* 300¥ is the equivalent of $2.31 USD.
Mahiro's Night Alone

* English
* Japanese

**Mahiro's Night Alone** (まひろとひとりの夜, *Mahiro To Hitorinoyoru*) is Chapter 12 of *Onimai: I'm Now Your Sister*. It was originally published on *Pixiv* on January 27, 2018.

## Summary

Mihari works in the lab all night, so Mahiro is left home by herself.

## Plot

Mihari tells Mahiro that they need some time apart. Mahiro is shocked and remarks to Mihari that she can't do this, asking what she did wrong. Mihari tells Mahiro to calm down, saying that it is just a turn of phrase. She explains that it's just a turn of phrase, as she needs to work on something critical in the lab so she'll be staying overnight at the university. Mihari asks Mahiro if she can hold down the fort, and Mahiro's worries go away. She says that she was made for this as she is a professional "own-home security guard", though Mihari disagrees on the use of the term 'professional'.

Mihari asks Mahiro if she can handle dinner on her own, leaving some cash just in case. Mahiro says that she can buy something from the corner store. Mihari also tells Mahiro to do the cleaning, but Mahiro makes no promises to that. Mahiro says that she'll be fine, despite Mihari's doubts. Mihari leaves and Mahiro waves her off.

Mahiro rejoices at finally being free, saying that she can do whatever she wants wherever she wants. She says that she can be as messy as she wants. She then remembers that she can always get delivery for dinner, and decides to change into something more comfortable. She decides that there is nothing more comfortable then one of her old (now oversized) male shirts. Sher remarks that she missed this a lot and even notices the floppy sleeves. She then gets all gloomy, wondering why she is happy about that.

Mahiro decides to instead play some video games, but quickly gets bored by it. She decides that the game is alright but realizes that ever since she became a girl, Mihari has always been checking up on her for something. She realizes that she's gotten so used to her dropping in to hang out, but brushes off the thought as it makes her almost sound like she's lonely.

To get her mind off it, Mahiro decides to order something for dinner and gets a massive feast of two pizzas, soda, chicken nuggets, and fries. Mahiro is overjoyed by the meal, but doesn't feel any better while eating it and decides to take a bath and go to bed.

The next morning, Mihari returns and finds Mahiro in a vegetative state with her hair all messed up. She deduces that Mahiro went to bed with wet hair again and begins combing it, remarking that Mahiro is completely helpless when she is not there.

Mahiro quickly turns around and hugs Mihari much to her surprise. She asks Mahiro if anything is wrong, to which Mahiro says that it's nothing and turns around, calling Mihari a jerk.

## Characters

* Mahiro Oyama
* Mihari Oyama
Hiyori Yosaki

* Anime
* Manga

**Hiyori Yosaki** (陽咲 日和 (ひより) , *Yosaki Hiyori*) is an employee at the Lingerie Shop where Mahiro Oyama is fitted for her first bra. She is voiced by Emiri Suyama in the anime.

## Appearance

Hiyori is a young woman with shoulder-length dark pink hair and purple eyes. Her hair is parted in the front with a line of bangs dividing it. There is also a small strand that sticks out at the top similar to Mahiro. She wears a white button-up short and a dark blue skirt with a black belt. In the manga she wears her nametag on an id card connected to a string worn around her neck, while in the anime anime she wears her nametag as a pin over the left side of her shirt directly above her bust.

## Personality

Hiyori is shown to have a bright and cheery attitude. She is fully dedicated to all of her customers and more than willing to help them settle on the right type of lingerie to buy.

## Relationships

### Raika Nanami

In the anime, Raika is seen hanging out with Hiyori in the background of several episodes. It is revealved in Collected Works Volume 2 that they are actually a couple.

## Etymology

* The name **Hiyori** means "day, sun" (日) (**hi**) and "harmony, peace" (和) (**yori**).
* The name **Yosaki** means "positive" (陽) (**yo**) and "blossom" (咲) (**saki**).

## Trivia

* Hiyori is not given a name in the manga, her name was instead revealed in the anime series first episode "Mahiro's Confusing New Body". In said episode, she is credited as "Clerk".
* It is revealed that Hiyori and Raika are characters from an original manga Nekotofu planned and shelved in the past.

## Appearances

### Manga

* Mahiro's Self Image
* Mahiro Falls in Love
* Mahiro's Masculine Ego

### Anime

* Mahiro's Confusing New Body
* Mahiro's Close Encounter
* Mahiro's New Friend
Mahiro's New Friend

**Mahiro's New Friend** (まひろとあたらしい友達, *Mahiro To Atarashii Tomodachi*) is the fourth episode of the *Onimai: I'm Now Your Sister!* anime series. It originally aired on AT-X, Tokyo MX, and BS11 on January 26, 2023.

## Summary

Mahiro loses to Mihari in a video game, so he has to do the grocery shopping this week as punishment. As an unemployed, good-for-nothing shut-in, the task at hand is daunting, but he plucks up the courage and makes his way towards the supermarket. The size of the crowd, however, makes his resolve waver and Mahiro finds himself cowering outside the store entrance. It is then that a young boy around his age, wearing a baseball cap, comes to the rescue and offers him a helping hand. Thanks to the boy's help, Mahiro is able to buy the groceries he needs and is just about to head home, when Kaede suddenly shows up. Seemingly, out of nowhere.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki
* Hiyori Yosaki
* Raika Nanami
Miyako Nagase

* 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)

### Family

Mr. Nagase (father)
Unnamed cousin

## Anime

### Voiced by

Karin Oda

**Miyako Nagase** (長瀬 (ながせ)  みやこ, *Nagase Miyako*) is a middle school student at Yotsuba University Affiliated Junior High School, a classmate of Mahiro Oyama, and the best friend of Mai Yasaka. She and Mai make up what Mahiro refers to as the "fashion squad". She is voiced by Karin Oda in the anime series.

## Etymology

* The name **Miyako** can mean:
	+ "beautiful" (*美*) (**mi**), "night" (*夜*) (**ya**), and "child" (*子*) (**ko**).
	+ "capital" (*都*) (**miyako**).
* The name **Nagase** means "long" (長) (**naga**) and "rapids" (瀬) (**se**).

## Appearances

### Manga

* Mahiro's First Day
* Mahiro on Valentine's Day
* Mahiro and the Guidance of the Stars
* Mahiro Pretties Up
* Mahiro's Big Secret (Part 1)
* Mahiro and the School Physical
* Mahiro and the Perfume
* Mahiro and the Sticker Collection
* Mahiro and Swim Class (Part 1)
* Mahiro and Swim Class (Part 2)
* Mahiro and the Midsummer Romance
* Kaede and the Junior High Girls
* Mahiro's Second Semester Debut
* Mahiro and the Charming School Festival (Part 1)
* Mahiro and the Charming School Festival (Part 2)
* 2020 Summer Special Brochure
* Mahiro's Field Day
Mahiro's Final Present

* English
* Japanese

**Mahiro's Final Present** (まひろとプレゼント, *Mahiro To Purezento*) is Chapter 36.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 12 of the doujinshi which was released on February 9, 2020.

## Summary

Mahiro receives a final birthday present from Kaede.

## Plot

As the party continues, Mahiro remarks that the only thing that could make this day better is if Kaede was here. Momiji apologizes for that, saying that Kaede had to work today, but says that she has a gift from her. Mahiro is delighted, knowing that she could count on Kaede.

Opening the gift, Mahiro sees that it is tinted lip gloss and a birthday card reading "Happy Birthday, Girl! Gotta up your cuteness game!". Miyo remarks how lovely the lip gloss is, while Momiji remarks how mature it is. Mahiro doesn't know how to react to it.

The next morning, Mahiro tries out the lip gloss in the bathroom. Mihari catches her doing it and goes over the moon at seeing Mahiro put on makeup. Mahiro gets embarrassed and points out that it would be rude not to try it.

## Characters

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

## Trivia

* The events of this chapter take place shortly after the events of the previous chapter "Mahiro's Surprise Party".
Mahiro's Touch

* English
* Japanese

**Mahiro's Touch** (まひろとおさわり, *Mahiro To Sawari*) is Chapter 25.5 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

Momiji feels left out when Mahiro pets Asahi's hair.

## Plot

Mahiro is petting Asahi's hair, and Asahi enjoys it greatly. Mahiro notes how calming it is, comparing it to petting a dog.

Momiji gets a little upset and asks Mahiro if she thinks that she's being a little too familiar with Asahi. Mahiro doesn't get it, but realizes that this could be problematic, thinking back to the phrase "Lolita! No Touch!".

Mahiro in panic slams Asahi's head down on the table and tells Momiji not to misunderstand, claiming that she doesn't have a single impure feeling. Momiji isn't buying it and turns away, leading Mahiro to think that Momiji is mad at her.

Miyo is amused at the situation and whispers something in Mahiro's ear. Mahiro asks her if she's sure, and Miyo nods.

Mahiro calls out to Momiji and starts petting her hair, telling her "there, there". Momiji smiles and admits to Mahiro that she can't stay mad at her. Mahiro lets out a sigh of relief.

Asahi, who now has a bandage on her head, asks Miyo what's going on over there. Miyo just laughs and says that she'll tell her when she's older.

## Characters

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

* 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

Sayaka Tojo

**Mai Yasaka** (八坂 (やさか)  まい, *Yasaka Mai*) is a middle school student at Yotsuba University Affiliated Junior High School, a classmate of Mahiro Oyama, and the best friend of Miyako Nagase. She and Miyako make up what Mahiro refers to as the "fashion squad". She is voiced by Sayaka Tojo in the anime series.

## Etymology

* The name **Mai** can mean:
	+ "dance" (*舞*) (**mai**).
	+ "linen robe" (*麻衣*) (**mai**).
	+ "real, genuine" (*真*) (**ma**) and "love, affection" (*愛*) (**ai**).
* The name **Yasaka** means "eight" (八) (**ya**) and "slope" (坂) (**saka**).

## Appearances

### Manga

* Mahiro's First Day
* Mahiro on Valentine's Day
* Mahiro and the Adult's Only Section
* Mahiro and the Guidance of the Stars
* Mahiro Pretties Up
* Mahiro's Big Secret (Part 1)
* Mahiro and the School Physical
* Mahiro and the Perfume
* Mahiro and the Seasonal Attire
* Mahiro and the Sticker Collection
* Mahiro and Swim Class (Part 1)
* Mahiro and Swim Class (Part 2)
* Mahiro and the Midsummer Romance
* Kaede and the Junior High Girls
* Mahiro's Second Semester Debut
* Mahiro and the Charming School Festival (Part 1)
* Mahiro and the Charming School Festival (Part 2)
* 2020 Summer Special Brochure
* Mahiro's Field Day
Mahiro and After the Festival

**Mahiro and After the Festival** (まひろと祭りのあと, *Mahiro To Matsurinoato*) is a special chapter of *Onimai: I'm Now Your Sister*. It was originally published exclusively in Collected Works Volume 7 on August 13, 2023.

## Summary

At the conclusion of the summer festival, Mahiro and her friends discuss the benefits and drawbacks of wearing yukatas.

## Plot

Directly after the fireworks conclude, Momiji notes that they were so pretty while Nayuta adds that the stalls were fun too. Mahiro notes lovingly that she got to see everyone in a yukata and makes a prayer sign noting that it was a sight for sore eyes. Momiji asks Mahiro who she thinks looked best in one. Mihari glances over at them while Mahiro notes that it is another loaded question.

Considering it, Mahiro says that maybe it was Asahi since she had the element of suprise with a large amount of gap moe. Asahi notes in delight that Mahiro is making her blush while Kaede laughs saying that she totally agrees.

Mahiro tells Kaede that she obviously looks great as well. Kaede thanks Mahiro for saying that, but adds that her chest is a bit off, as she thinks she looks better without a yukata since she's flat with one on. Miyo says that kaede is pulling off the look perfectly, and Kaede thanks her for saying that. All the while, the flat chest squad get all gloomy due to not being able to share in the experience.

Mahiro suddenly realizes that now that she's taken a closer look, Kaede's bust does look much flatter than usual. Asahi panics and asks her and Miyo if they cut them off, to which Miyo insists that they didn't. Kaede explains that she uses shapewear to flatten them, while Miyo says that she wraps a towel around her torso to straighten out her curves. Mahiro notes that it sounds painful, and Nayuta explains that it's tough when they're big, speaking from experience.

Momiji is amazed that even if you wear a yukata you still need underwear. Mahiro becomes shocked by that statement andf asks Momiji what she meant by that just now. Momiji is also suprised, and reiterates her belief that you don't need to wear anything underneath a yukata, asking if she's right. Kaede says that that's a thing of the past. Mihari says that it'd make sense if they were at a ryokan or something, with Miyo saying that outside is a bit much.

Momiji immediately blushes furiously and covers her private area with her hands. Mahiro is shocked that there's apparently nothing underneath, especially since Momiji is als wearing an easily removeable men's yukata. Momiji starts crying, asking Kaede why she didn't tell her. Kaede admits that she never thought that she'd have to.

Asahi tells Momiji to take it easy, and Momiji feels better. Asahi gives Momiji a thumbs up saying that she can't see what isn't there, which makes Momiji furious at her.

## Characters

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

## Trivia

* The events of this chapter take place directly after the events of "Mahiro and the Summer Festival".
Mahiro, Even On Heavy Days

* English
* Japanese

**Mahiro, Even On Heavy Days** (まひろと多い日も安心, *Mahiro To Ouihi Mo Anshin*) is Chapter 5.5 of *Onimai: I'm Now Your Sister*. It was originally published in Volume 2 of the doujinshi which was released on August 13, 2017.

## Summary

Mahiro suffers through her first period, with Mihari introducing her to pads and tampons.

## Plot

Still suffering from her first period, Mahiro exits the bathroom. Mihari asks her if she got 'it' on okay, the 'it' being a pad that she gave Mahiro. Mahiro cringes a bit, remarking that it's very stiff and uncomfortable. Mihari tells her that she'll get used to it.

Mihari suggests to Miharo that if she hates pads, she could always try tampons. Miharo asks what those are, and then cringes when Mihari explains that they're the one's that one puts inside their body.

Mihari decides to try anything once, much to Mihari's suprise. Mahiro attempts to put one in, but ultimately can't work up the nerve to do so. She admits that it's a little scary, much to Mihari's enjoyment.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter and "Mahiro's Melancholy Day" are said to take place exactly one month after the events of "Mahiro's Confusing New Body".
Kanata Senkawa

**Kanata Senkawa** (千川 (せんかわ)  かなた, *Senkawa Kanata*) is the high-school aged older sister of Minato Senkawa. She is an avid online gamer who is part of a guild made up of herself, Ponta, Shiori, Lucas, Risachii, and Yuta Sakurada.

## Appearance

It has been noted by Kanata that she and Minato resemble each other greatly, presumably having the same grey-colored hair and brown eyes. They resemble each other so much that Kanata believes that they look like twins when Minato is dressed in girl's clothing.

## Etymology

* The name **Kanata** means "far away" (**kanata**).
* The name **Senkawa** means "thousand" (千) (**sen**) and "river" (川) (**kawa**).

## Appearances

### Manga

* Minato-kun is Done For?
* Offline Meeting Night
Mahiro's "Something"

* English
* Japanese

**Mahiro's "Something"** (まひろといいもの, *Mahiro To `Iimono`*) is Part 3 of Chapter 34.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 12 of the doujinshi which was released on February 9, 2020.

## Summary

Yuta and Minato talk to Mahiro about her seeing them in the adult's only section at the bookstore the other day.

## Plot

The day after Mahiro encountered them in the bookstore, Yuta and Minato come up to talk to her in class. Mahiro asks them what's up, and they say that it is about what she saw yesterday. Mahiro realizes that they are talking about the bookstore, and they claim that they were just talking about the way that the store was organized.

Mahiro sees through their lie and tells them that it is okay and that she gets it. She notes that they are both boys after all, so it is only natural that they like stuff like that. She tells them that they really don't need to make excuses like that, and the boys sigh in relief. Mahiro then suggest that she could give them "something to really look at sometime", and the boys are overloaded by the thought.

Later at home, Mahiro gets together many of her eroge magazines (the so called "something" she mentioned) with the hopes of giving some to Yuta and Minato. She notes that they're still young, so maybe she'll give them some tame vanilla. Mihari asks Mahiro what she's planning to do with those dirty books, then scolds her after figuring it out.

Mahiro eventually realizes that what she said could've been misinterpreted as as lead on for them to see her bra. Upon realizing this, she freaks out and wonders if she is voyeur.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Yuta Sakurada
* Minato Senkawa

## Trivia

* The events of this chapter occur one day after the events of the previous chapter "Mahiro's Yuri Manga" while referencing when Mahiro encountered Yuta and Minato in the bookstore in "Mahiro and the Adults Only Section".
Hair Salon

* Anime
* Manga

The **Hair Salon** is a hair salon in Onimai owned by Raika Nanami. It is where Mihari Oyama and Mahiro Oyama go to get their hair styled.

## History

Mihari Oyama is a regular at the salon, and as a result is well acquainted with the owner Raika Nanami.

When Mahiro starts experiencing split ends in "Mahiro Visits the Salon", Mihari decides to take her to the salon to take care of them. While there, Raika constantly talks to Mahiro while cutting her hair, shampooing it, and rinsing it. Eventually, while Raika is styling it, Mahiro decides that she's had enough and takes a nap in the chair to avoid any more idle chat.

While Mahiro is asleep, Raika and Mihari decide to give her a perm. Although Mahiro is surprised when she wakes up, she accepts it and decides that it is nice. Afterwards, Raika bids farewell to Mahiro and Mihari, hoping to see them again.

## Trivia

* The name of the store was never seen in the manga. It was instead revealed in the fifth episode of the anime series "Mahiro Discovers Adventure and Social Gatherings".

## Appearances

### Anime

* Mahiro Discovers Adventure and Social Gatherings
Kaede's Nickname

* English
* Japanese

**Kaede's Nickname** (かえでとあだ名, *Kaede To Adana*) is Chapter 47.5 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

Walking back from the burger place, Mahiro asks Asahi to think of a nickname for Kaede.

## Plot

As Mahiro and Asahi exit the burger place, Asahi thanks Kaede for everything and she waves them off. As they walk home, Mahiro tells Asahi not to take advantage of Kaede too much, and Asahi agrees.

Mahiro realizes that Asahi doesn't have nickname for Kaede and asks her why, as she has one for nearly everyone else she knows. Asahi admits that she never thought of that, and decides to try and think of one.

After a moment of thought, she decides that Momiji's onee-chan will be known as "Momi-ji-chan". Mahiro notes that that's no good, imagining Momiji with an elderly mustache.

Asahi arrives home all happy, while her mother is confused to see her daughter wearing such a feminine outfit.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Asahi Ōka
* Yu Ōka

## Trivia

* First appearance of Yu Ōka.
* The events of this chapter take place during the events of "Mahiro and the Sunshine Girl", after Mahiro and Asahi finish their lunch and before Mahiro returns home.
* As noted by the chapter, "ji-chan" is a term used in Japan to refer to an elderly person.
Kasumi Hozuki

**Kasumi Hozuki** (穂月 (ほづき)  かすみ, *Hozuki Kasumi*) is the mother of Kaede and Momiji Hozuki.

## Relationships

### Kaede Hozuki and Momiji Hozuki

Kaede and Momiji appear to have a good relationship with their mother. Momiji was embarrassed about her mother being at Parent's Day, but she was still happy to see her.

## Etymology

* The name **Kasumi** means "mist" (**kasumi**).
* The name **Hozuki** means "ears" (穂) (**ho**) and "moon" (**zuki**) (月).

## Trivia

* Kasumi's first name was revealed in Collected Works Volume 6.

## Appearances

### Manga

* Mahiro and Visitation Day
* Mahiro and the Rainy Season
Tankōbon Volume 2

* English
* Japan

**Volume 2** (お兄ちゃんはおしまい!②, *Onii-chan wa Oshimai!②*) is the second tankōbon volume of *Onimai: I'm Now Your Sister!*. It is a compilation of chapters from Volume 4, Volume 5, Volume 6, and Volume 7 of the doujinshi with added bonus chapters exclusive to this release. It was originally released on January 26, 2019 in Japan, and on October 5, 2021 in North America.
Mahiro and Self-Styling

* English
* Japanese

**Mahiro and Self Styling** (まひろとセルフアレンジ, *Mahiro To Serufuarenji*) is Chapter 51.5 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 once again has low energy, and tries to style her hair the way that Kaede previously did.

## Plot

The next day after the trip to the Hozuki residence, Mahiro's hair once again frizzes up causing her to have low energy once more.

Mahiro thinks that she's right back to where she started, and tries to remember how Kaede styled her hair.

She ties to split it into two and then braid in the back, but realzies that that's not right and tries again.

Eventually, Mahiro's efforts mess up her hair even more and make her feel even more depressed. Mihari tries to help her brush it out, while pointing out that what Mahiro did caused it to be all tangled up. Mahiro slumps forward noting that this is impossible.

Even with her hair untangled, Mahiro still feels bad about it being frizzy.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* The events of this chapter take place one day after the events of the previous chapter "Mahiro and the Rainy Season".
Mahiro Pretties Up

Disambiguation page for Mahiro Pretties UpThe 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 Pretties Up** may refer to:

* Mahiro Pretties Up (manga) - Chapter 37 of the *Onimai: I'm Now Your Sister!* manga series.
* Mahiro Pretties Up (anime) - Episode 11 of the *Onimai: I'm Now Your Sister!* anime.
Mihari and the High School Girls

* English
* Japanese

**Mihari and the High School Girls** (みはりとJK, *Mihari To JK*) is Chapter 37.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 13 of the doujinshi which was released on May 2, 2020.

## Summary

Mahiro invites Kaede over to help Mihari dress more fashionably.

## Plot

As Mahiro plays a video game on the couch, Mihari leers over her. Mihari teases Mahiro about not wearing any makeup today, and Mahiro yells at her to quit pestering her. Mahiro then dials it up and asks Mihari why she isn't wearing any, challenging her to dress up once in awhile. Mihari gets embarrassed and declines, saying that she doesn't have anyone to show off for and that she'd be embarrassed drawing attention to herself like that.

Mahiro sighs and remarks that she's left her no choice. She gets Kaede (who seems to appear of thin air) and tells her to take it from here. Kaede says that she'll take care of it, while Mihari wonders where Kaede came from. Mihari protests saying that she doesn't want to, but Kaede holds her from behind telling her to roll with it.

Kaede tells Mihari that since she skipped ahead in high school, it might be fun for her to take this chance and join them in this kind of teenage girl stuff. Mihari is brought to tears by Kaede's sincerity and tells her that she can do whatever she likes to her. Kaede thanks her, and Mahiro thinks to herself that those two have a powerful friendship.

Some time later, Kaede announces that she is all done. It turns out that she put Mihari in a near identical outfit to her own with her pigatils put up with similar scrunchies. Mihari notes that she is so hot now, even if she doesn't feel it. Mahiro gets angry and says that this is not what she had in mind. Mihari and Kaede just laugh at that statement.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki

## Trivia

* For a brief instant, Mihari breaks the fourth wall as she wonders where Kaede came from, who just seems to appear in their apartment out of thin air.
Onimai: I'm Now Your Sister! (manga)

*See also: Onimai: I'm Now Your Sister! (anime) and Onimai*

***Onimai: I'm Now Your Sister!*** (お兄ちゃんはおしまい!, *Onii-chan wa Oshimai!*) is a Japanese manga series written and illustrated by Nekotofu. The series has been serialized online since 2017; it is also currently serialized in Ichijinsha's *Monthly Comic Rex* magazine since April 2019. It is licensed in English by Kodansha USA. An anime television series adaptation by Studio Bind ran from January 5, 2023 to March 23, 2023.

## Plot

The series follows Mahiro Oyama, an otaku living with his scientist younger sister Mihari. One day he wakes up as a young girl, a result of one of Mihari's experiments. Mahiro must now learn to live as a middle school girl, all while making friends in his new school.

## Chapters

*See also: List of Onimai: I'm Now Your Sister! Chapters*

Written and illustrated by Nekotofu, *Onimai: I'm Now Your Sister!* began serialization online via Pixiv and other platforms in 2017. It also started in Ichijinsha's *Monthly Comic Rex* magazine on April 27, 2019. As of January 2023, seven *tankōbon* volumes have been released by Ichijinsha. In North America, Kodansha USA is publishing the series in English. In Germany, Manga JAM Session publishes the manga as *Ab sofort Schwester!*.
Onii-chan wa Oshimai! Wiki

**Welcome to Onii-chan wa Oshimai! Wiki!**

Anime • Manga • Characters • Recent Changes • New Pages • Help Wiki

This wiki is based off the manga/anime series *Onimai: I'm Now Your Sister!* also known as *Onii-chan wa Oshimai!*

This wiki was founded on January 7, 2023. We currently have **390 articles**, **586 images**, and **7,408** edits.

At present, the Wiki only covers material and characters from the first seven volumes (as only those seven volumes have been published in English), but more is intended to be added in the future once additional chapters are published in North America with official English Translations.

We use a formal style on this wiki, with an in-universe style of description. Please use existing infoboxes, and be sure to create redirects for chapters, characters, and episodes. Note that we are a fan-based wiki, and we cover only official content from the franchise.

If there are any questions, get in touch with the wiki's admins. Other than that, happy editing.

We're a collaborative community website about Onii-chan wa Oshimai! that anyone, including you, can build and expand. Wikis like this one depend on readers getting involved and adding content. Click the "ADD NEW PAGE" or "EDIT" button at the top of any page to get started!

**Introduction**
The series follows Mahiro Oyama, an otaku living with his scientist younger sister Mihari. One day he wakes up as a young girl, a result of one of Mihari's experiments. Mahiro must now learn to live as a middle school girl, all while making friends in his new school.

**Characters**
Mahiro OyamaMihari OyamaKaede HozukiMomiji HozukiAsahi ŌkaMiyo Murosaki

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Mihari's Wasted Efforts

* English
* Japanese

**Mihari's Wasted Efforts** (みはりと空回り, *Mahiro To Karamawari*) is Chapter 6.5 of *Onimai: I'm Now Your Sister*. It was originally published in Volume 2 of the doujinshi which was released on August 13, 2017.

## Summary

Mahiro mentions that Mihari isn't living up to her own ideals about changing clothes everyday and challenges her to dress up for a change.

## Plot

Mahiro remarks how sundresses are so comfortable. Mihari notices that she sure has gotten used to her new wardrobe, causing Mahiro to panic. Mahiro asks about Mihari, noting how she's so eager to dress Mahiro up like a doll, even though she still wears the same clothes every day. Mahiro points out that Mihari told her that one should always wear fresh clothes everyday, leading Mihari to gulp.

Mihari tries to say that what she wears is like a uniform to her; her trademark outfit. Mahiro isn't having it though and suggests that she try dressing up for a change. Mihari is shocked that her brother of all people would be the one saying this.

Mihari finally caves in and wears a new dress, while acknowledging that its a little embarrassing. She asks Mahiro what she thinks. Mahiro is playing a video game and briefly turns around to say that its fine before returning. Mihari becomes angry that she did that for nothing.

Later on, Mahiro is hungry and sees Mihari eating. She asks about her own dinner, but Mihari is still angry and just tells Mahiro to make it herself.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* Mahiro directly references when Mihari told her to always wear clean clothes in "Mahiro Faces the Mirror".
Mihari's Research Lab

**Mihari's Research Lab** (みはりの研究室, *Mihari No Kenkyūshitsu*) is a special chapter of *Onimai: I'm Now Your Sister!*. It was originally published exclusively in the Good Night Onii-chan! doujinshi included with the special edition of Tankōbon Volume 7 which released on January 31, 2023.

## Summary

Mihari has fun with her labmates at the University.

## Plot

On day, Mihari shows up for work at her lab at the University. She says good morning and is greeted by her labmates Arika and Tsubasa who say good morning back to her. Arika notes that Mihari is always glowing as usual, while Tsubasa asks Mihari if she wants a snack; offering her some Pocky.

Mihari cringes over the two of them treating her like a little kid again. She notes for the record that the three of them are supposed to be peers and asks them to please refrain from indulging others. Arika and Tsubasa laugh and apologize.

Chitose notes that it looks like everyone's getting along today. Mihari is shocked by Chitose's disheveled appearance with glazed over eyes and asks her if she's okay. Chitose admits that she hasn't slept in three days. Arika notes that Chitose might be quite tired, while Tsubasa offers her a drink. Chitose asks what it is, and Tsubasa says that it's the newly developed "It'll keep you going even after three days of no sleep" drug. Chitose asks Tsubasa if she's trying to kill her, then cries on Mihari's shoulder noting that everyone is bullying her. Mihari notes to Chitose that she's hopeless and tells her to go and take a nap. As Chitose goes to do so, Arika notes that "Mom" makes an appearance, which Tsubasa agrees with.

In the evening, Nayuta pops into the lab. Mihari is happy to see her, and Nayuta explains that she's here to pick Chitose up. Arika giggles and notes that Chitose is in the middle of an afternoon nap. Tsubasa offers to show Nayuta the way, but Nayuta says that she already knows where the nap room is.

Mihari then wonders how Nayuta and Chitose are related. Arika says that she heard that they are half-sisters, and Mihari is amazed. She then gets angry and tells Arika not to go dropping new info in the middle of a limited-edition booklet. Arika realizes her mistake and apologizes, while Tsubasa is confused by the use of the term booklet.

Arika notes that Mihari got mad at them, after which Tsuabas points out that it's inevitable as they are new characters.

Asahi suddenly appears and points out that her older brother is a new character as well, telling everyone that his name is Yuya.

## Characters

* Mihari Oyama
* Asahi Ōka
* Nayuta Tenkawa
* Chitose Azuma
* Arika Tachimi
* Tsubasa Inui
* Yuya Ōka

## Trivia

* First appearance of Tsubasa Inui, though her last name isn't mentioned.
* First mentioning of Yuya Ōka's first name.
Mahiro and the Bathroom

* English
* Japanese

**Mahiro and the Bathroom** (まひろとトイレ, *Mahiro To Toire*) is Chapter 1.5 of *Onimai: I'm Now Your Sister*. It was originally published in Volume 1 of the doujinshi which was published on May 6, 2017.

## Summary

Mahiro, while playing video games, has to pee and face the bathroom for the first time as a girl.

## Plot

To take her mind off these newfound changes, Mahiro decides to plan an MMO. She notes that whether she's a girl or a guy, she's still a monster-slaying machine.

She starts off fine at first, but eventually starts to fidget noting that she has to pee real bad. She notes that she can't go AFK (Away-From-Keyboard) as her team is about to fight a boss. Mahiro notices an empty water bottle nearby and decides to use it as it is an emergency.

She gets into position but remembers that this won't work as she's no longer male. She also has no idea where it comes out. Cursing to herself she rushes to the bathroom and sits down to pee.

By the time Mahiro gets back to her room, the boss battle is already in progress. She sits down on her bed, and suddenly falls on her side, groaning over having needed to go though such an experience.

Meanwhile, Mihari watches Mahiro on the webcam and congratulates her for getting through it, while also being thankful that she didn't use the empty bottle.

## Characters

* Mahiro Oyama
* Mihari Oyama
Mahiro Puffs Out

**Mahiro Puffs Out** (まひろ胸を張る, *Mahiro Munewoharu*) is the thirty-fifth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Masakuni Igarashi. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Summary

Mahiro forgets to wear a bra to school and tries to hide it.

## Characters

* Mahiro Oyama
* Momiji Hozuki
* Miyo Murosaki
* Rin Minakata

## Trivia

* This chapter is written and illustrated by Masakuni Igarashi.
Mahiro and the Mystery Brew

* English
* Japanese

**Mahiro and the Mystery Brew** (まひろとドリンク, *Mahiro To Dorinku*) is Chapter 32.5 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

Back at school, Miyo suggests that Mahiro try her special energy drink to feel better.

## Plot

The day after coming down with a sudden cold, Mahiro is back in action and returns to school. She apologizes to her friends for worrying them. Momiji remarks that she is glad to see Mahiro on her feet again, and Miyo says that she brought something to help Mahiro keep her strength up.

Mahiro is excited, until Miyo reveals that it's her patented handmade nutrition smoothie. She adds that she put in everything healthy that she could think of. Mahiro hides behind Momiji as they both worry as to what that implies.

Momiji pulls Asahi forward claiming that she says that she wants to try it, and Miyo pours a cup of it despite Asahi's suprise. To avoid being rude, Asahi drinks it while saying "God protect me". After drinking it, Asahi claims to feel so energized, even though Momiji points out that her face is turning green. Mahiro notes that it is super effective.

Momiji grabs a collapsing Asahi and agrees that it seems effective, but remarks that maybe it's too much for someone who is recovering from an illness. Miyo reluctantly agrees.

Mahiro thinks to herself that if she drinks this, she might get so sick that her "comrade" might return again. In the end though, she decides not to drink it.

## Characters

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

## Trivia

* The events of this chapter take place the day after the the previous chapter "Mahiro and the Unexpected Guests".
Misao Nogata

* 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

### First Appearance

Mahiro Goes Back to Middle School

**Misao Nogata** (野方 みさお, *Nogata Misao*) is a middle school student at Yotsuba University Affiliated Junior High School and a classmate of Mahiro Oyama.

## Appearance

In the manga, Misao is shown to have a permanent frown on her face, though this isn't the case in the anime as she is regularly seen smiling.

## Etymology

* The name **Misao** means "chastity" or "fidelity" (**misao**).
* The name **Nogata** means "field" (野) (**no**) and "direction" (方) (**gata**).

## Appearances

### Manga

* Mahiro's First Day
* Mahiro's Final Exams
* Mahiro and the Charming School Festival (Part 1)
* Mahiro's Field Day
Onimai Side Reader: Mihari's Laboratory

**Onimai Side Reader: Mihari's Laboratory** (おにまい副読本みはりの研究室, *Onimai Fukudokuhon Mihari No Kenkyūshitsu*) is a spin-off doujinshi volume of *Onimai: I'm Now Your Sister!*. It was originally released on August 13, 2023.

## Contents

* A Story Where That Grows
* Mihari and the Drinking Party
* A Story Where That Grows Part 2

## Trivia

* According to Nekotofu, the chapters contained in this volume are meant as sort-of spin-offs from the main series that focuses on other characters that he hopes to create more of in the future.
* "A Story Where That Grows" was originally released in the Mihari-chan in the Laboratory doujinshi on May 27, 2023.
Lingerie Shop

* Anime
* Manga

The **Lingerie Shop** is a lingerie store in Onimai. It is where Mahiro Oyama is taken to get fitted for her first bra.

## History

While Mahiro is exercising by running with Mihari during the events of "Mahiro's Self Image", she starts complaining about her nipples hurting. It turns out that Mihari had given Mahiro bras to wear, but Mahiro decided not to wear them as a way of drawing the line somewhere. Hearing this, Mihari decided to take Mahiro bra shopping to help her cross the line.

In the shop, the employee Hiyori Yosaki measured Mahiro's bust and helped her try on various bras in her size. In the end, Mahiro decided to get a sports bra.

## Trivia

* The name of the store was never seen in the manga. It was instead revealed in the first episode of the anime series "Mahiro's Confusing New Body".
Mahiro and the Full-Cup Bra

* English
* Japanese

**Mahiro and the Full-Cup Bra** (まひろとカップブラ, *Mahiro To Kappubura*) is Chapter 43.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 15 of the doujinshi which was released on December 30, 2020.

## Summary

Mahiro's bust has finally grown large enough to upgrade to full-cup bras.

## Plot

As Mihari is working on her computer in her room, a knock is heard at her door and she tells the person knocking to come on in. It turns out to be Mahiro, and Mihari asks her what's up, also noting that she looks troubled. Mahiro says that her chest is feeling a little tight, and Mihari gets worried. Mihari pulls out her stethoscope and asks Mahiro if she's feeling alright otherwise with no fever. Mahiro tell her to wait and says that she's not sick, rather than she has a more natural problem.

Mahiro takes off her sweatshirt and says that her trainer is just too small for her now, much to Mihari's shock. Mahiro asks if it shrunk in the wash or something. Mihari smiles as she realizes what is going on and tells Mahiro that she understands and will buy her some new ones. Mahiro thanks her and closes the door. Mihari then goes to work on her computer to take care of the issue.

A few days later, a package arrives in the mail for Mahiro. Much to Mahiro's shock, the package contains a regular full-cup bra. Mihari says that she figured it was time to move onto the real thing, much to Mahiro's disbelief.

Mahiro protests, saying that sports bra look like regular clothes so they're fine, but that this is way too embarrassing and refuses to wear it. Mihari tells Mahiro to calm down, and suggests that she try it on first. Mahiro tries to resist, but Mihari holds her in place and says to let her put in on. Mihari tries to make sure that Mahiro isn't spilling out to the side, while Mahiro lets out a shriek.

Mihari finishes, and Mahiro leans over all gloomy. She notes that the last shred of her dignity as a guy is gone, leading Mihari to wonder what makes this the last shred with all that she's been through.

In her room, Mahiro notes that this isn't so bad after all, and that it kind of makes her bust look bigger in it as well. Mahiro leans forward while looking in the mirror to get a good look at how good it looks.

Mihari suddenly comes in, and Mahiro shrieks in embarrassment, telling Mihari that she wasn't doing anything. Mihari just chuckles and tells Mahiro just to make sure no to post anything online; aka, no sexting. Mahiro points out that there's no way she would.

A few days later, Mahiro cries and tells Mihari that she can't unhook the bra by herself, telling Mihari that she has to do it for her. Mihari points out to Mahiro that it's easier if she turns it around so the clasp is in the front. Mahiro is shocked, noting that her world has been turned around as well.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter marks the last time that Mahiro wears a sports bra. From this chapter onward, Mahiro wears full-cup bras.