recursal/Fanatic-Fandom huggingface dataset:
Mahiro and the Parent-Teacher Conference

* English
* Japanese

**Mahiro and the Parent-Teacher Conference** (まひろと三者面談, *Mahiro To Sanshamendan*) is Chapter 48.5 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 meets up with Mahiro's homeroom teacher after Parent Visitation Day.

## Plot

After conversing with Chitose and Nayuta, Mihari suggests to Mahiro that they go and say hi to Mahiro's teacher.

Mihari steps into the office with Mahiro and immediately recognizes Mari, who in turn recognizes her back. Mihari explains that Mari was her own homeroom teacher when she was still in middle school. Mahiro is amazed at the coincidence, and Mari notes that she was still new to the job back then. She mentions that she heard that Mihari was admitted to university early and congratulates her, causing Mihari to chuckle.

Mari then completely changes her personality and says that she must question Mihari's outfit, much to Mihari's surprise. She says that even if Mihari's work uniform has an an air of professionalism about it, it's hardly appropriate garb for something like parent visitation day, asking if she wouldn't want to the draw that bad sort of attention to Mahiro. Mihari is left completely embarrassed.

Mari realizes what she is doing and apologizes, having forgotten that she's not Mihari's teacher any longer. Mahiro is happy to see this and asks her to please continue, while Mihari says that she'll keep Mari's advice in mind.

As they leave the office, Mihari is amazed, not having expected that Mari would lecture her. Mahiro points out that she reaps what she sows. Mihari points out that Mari is so strict about appearances, and Mahiro says "tell me about it", remembering the times that Mari reprimanded her.

It is revealed that Mari reprimanded Kaede in her third year for wearing lipstick, causing Kaede to get shocked over having been busted.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Mari Nishinomiya

## Trivia

* The events of this chapter take place during the events of the previous chapter "Mahiro and Visitation Day", after the conversation with Chitose and Nayuta and before Mihari and Mahiro return home.
* Mahiro indirectly references the two times that Mari previously reprimanded her for violating the dress code. The first was in "Mahiro Pretties Up" for wearing lipstick, and the second was in "Mahiro and the Perfume" for wearing perfume.
Onii-chan's Shoulders Are Done For

**Onii-chan's Shoulders Are Done For** (お兄ちゃんの肩はおしまい, *Onii-chan No Kata Wa Oshimai*) is the thirty-second 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 2 of the anthology series on April 27, 2022.

## Summary

Mahiro wakes up one moring to find that her bust has grown to colossal proportions.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter is written and illustrated by Cool Kyōshinsha.
Miyo and the Enchanted Night

**Miyo and the Enchanted Night** (みよと魅惑の夜, *Miyo To Miwaku No Yoru*) 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

Miyo fantasizes about yuri in her dreams.

## Plot

One night, Miyo lies in her bed in a nightie, reading a yuri novel about two sisters that hook up. Miyo sighs with pleasure, noting how sisters are so wonderful. She calls it a form of love more immoral than ordinary yuri, but notes that these might just be the delusions of an only child. She soon turns out the light and closes her eyes under the covers. Before she goes to sleep, Miyo begins to think of sisters on intimate terms.

Imagining Mahiro and Mihari getting together, Miyo notes that Mahiro is definetly a bottom.

Imagining Kaede and Momiji getting together, Miyo notes that having a little sister as the top might be kind of hot.

She notes that Asahi has an older brother, and realizes that that scenario isn't going to work.

Imagining Nayuta and Chitose getting together, she notes that despite there being an age gap between them it would still be nice.

Miyo giggles to herself about her fantasies and soon falls asleep.

The next morning, birds chirp outside and Miyo yawns as she wakes up, noting that she ended up falling asleep. She comes shocked to see Mihari and Kaede at the foot of her bed. Mihari says good morning to Miyo, with Kaede glad that Miyo is finally awake. Mihari takes Miyo by the chin and calls her such a bad girl for sleeping in. Miyo is shocked by Mihari's behavior, but soon realizes that this is all just a dream, something that Kaede confirms.

Kaede then opens her arms and lovingly tells Miyo to do whatever she wants with her. Miyo realizes that she's being seduced and finds herself at conflict between her arousal and her own inhibitions.

The next day at school, Miyo is seen shaking at her desk with her face in her hands. Momiji asks her what is wrong, and Miyo cried out that she just wanted to be a spectator, not a participant. Nayuta notes to Miyo that her dark side is spilling out.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki
* Nayuta Tenkawa
* Chitose Azuma
Mahiro and the Game World

**Mahiro and the Game World** (まひろとゲームの世界, *Mahiro To Gēmu No Sekai*) is the twentieth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Anmitsu Okada. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

## Summary

Mahiro tests out the new VR headset that Chitose gave to Mihari.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Chitose Azuma

## Trivia

* This chapter is written and illustrated by Anmitsu Okada.
Mihari's Placebo

**Mihari's Placebo** (みはりの偽薬, *Mihari No Giyaku*) is the thirty-eighth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Sasuke. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Summary

Mihari acccidently eats some chocolates with alcohol in them.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter is written and illustrated by Sasuke.
Minori Shiina

* 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

Misaki Watada

**Minori Shiina** (椎名 (しいな)  みのり, *Shiina Minori*) is a middle school student at Yotsuba University Affiliated Junior High School, a classmate of Mahiro Oyama, and the best friend of Satsuki Tadaka. She and Satsuki are always seen standing in the way of boys when said boys gang up on Mahiro and the other girls in class. She is voiced by Misaki Watada in the anime series.

## Personality

Minori is described as more of a follower who doesn't really think for herself. This is shown by the fact that she tends to speak second and always reiterates what Satsuki says whenever the two gang up on the boys of their class.

Inside however, Minori does this because she secretly has a crush on Minato. After the summer of their second year in middle school, Minori is shown to be on much friendlier terms with Minato, though it is unclear if they are currently dating.

## Etymology

* The name **Minori** means "abundant" (穣) (**minori**).
* The name **Shiina** means "vertebrae" (椎) (**shii**) and "given name" (名) (**na**).

## Appearances

### Manga

* Mahiro's First Day
* Mahiro's Difficult Class
* Mahiro's Final Exams
* Mahiro and the Allure of Bare Legs
* Mahiro on Valentine's Day
* Mahiro and the Guidance of the Stars
* 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's Field Day
Mahiro's Sunday Morning

* English
* Japanese

**Mahiro's Sunday Morning** (まひろとニチアサ, *Mahiro To Nichasa*) is Chapter 12.5 of *Onimai: I'm Now Your Sister*. It was originally published in Volume 4 of the doujinshi which was released on February 11, 2018.

## Summary

Mahiro enjoys a Sunday morning magical girl anime.

## Plot

Mahiro watches a magical girl anime on TV called *Cutie Pure* in absolute heaven. Mihari notices Mahiro doing that and remarks that she is really getting into girly stuff. Mahiro insists that real men love all Sunday morning superheroes, and that she thought that she'd watch the classic series since its been so long. Mihari agrees to that, but leaves saying that she is not watching it with her.

Mahiro calls it wonderful, saying that she can't get enough of these transformation sequences. Mahiro even mimics one calling out "Overflowing With Life! Pure Lily!". Looking at herself in the mirror, Mahiro declares that impression not bad.

Mahiro really gets into it and mimics one of the magical attacks known as "Pure Arrow" calling out that she'll punish the evildoer and strikes the pose.

At that moment, Mihari walks back in for something and sees Mahiro doing that. She pretends that Mahiro got her with the "Pure Arrow", but Mahiro, embarrassed, tells her that she doesn't need to play along.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* The anime that Mahiro watches, Cutie Pure, is a parody of the long-running anime franchise *Pretty Cure*.
Mahiro and the Comrade's Return

* English
* Japanese

**Mahiro and the Comrade's Return** (まひろと戦友の凱旋, *Mahiro To Sen'yū No Gaisen*) is Part 1 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

Shortly after dinner, Mahiro decides to take advantage of her "comrade" while it is still here.

## Plot

Shortly after dinner, Mahiro remarks that she is stuffed, while Kaede remarks that it was so good. Mahiro decides to go to the bathroom, and Mihari cannot believe that Mahiro is doing that right after eating.

Mahiro sits down and pees, but then kicks herself for doing so. She realizes that she was so used to doing so that she sat down without thinking. Since her "comrade" is back, she could've stood up to pee.

She then grasps the reality of her "comrade" being back and realizes that she could take the opportunity to indulge herself. She realizes that it is perfect as she is in a bathroom.

Mihari hears strange noises coming from the bathroom and senses a salacious aura. Not liking it she knocks on the door and asks Mahiro if she's okay in there much to Mahiro's shock.

Mahiro reveals to Mihari that, much to her disappointment, her "comrade" is out of commission. Mihari doesn't get it though.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki

## Trivia

* The events of this chapter take place during the events of "Mahiro's Panic! At the Hot Spring (Part 2)" after the dinner had during said chapter.
Magic Armada Love ★ Master

* Anime
* Manga

***Magic Armada Love**

★

{\displaystyle \bigstar}

 **Master*** (魔法艦隊ラブマスター, *Mahō Kantai Rabumasutā*) is Mahiro Oyama's favorite anime series. It is a also a favorite series of Mari Nishinomiya, who regularly cosplays as the main character of the series at conventions.

## Appearances

### Manga

* Mahiro's Little Adventure
* Mahiro and the Fan World

### Anime

* Mahiro Discovers Adventure and Social Gatherings
Mahiro's Bare Feet

* English
* Japanese

**Mahiro's Bare Feet** (まひろと素足, *Mahiro To Suashi*) is Chapter 40.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 14 of the doujinshi which was released on August 15, 2020.

## Summary

Miyo notices that Mahiro isn't wearing her tights.

## Plot

While seeing Mahiro talk with Nayuta, Miyo realizes that Mahiro no longer has her tights on.

Miyo tries to think to herself that having two girls alone in the nurse's office doesn't mean anything happened between them. Despite that she can't help but imagine Nayuta peeling off Mahiro's tights with the two of them lying on top of each other on the bed in the nurse's office.

Miyo gets aroused and thinks to herself that it seems they have a new contender. Momiji gets confused by Miyo's expression.

## Characters

* Mahiro Oyama
* Momiji Hozuki
* Miyo Murosaki
* Nayuta Tenkawa

## Trivia

* The events of this chapter take place during the events of the previous chapter "Mahiro's Big Secret (Part 2)".
Mihari-chan in the Laboratory

**Mihari-chan in the Laboratory** (研究室のみはりちゃん, *Kenkyūshitsu No Mihari-chan*) is a spin-off doujinshi volume of *Onimai: I'm Now Your Sister!*. It was originally released on May 27, 2023.

## Trivia

* The exact designation of this doujinshi when it was released was hard to pin down, though according to Nekotofu in Onimai Side Reader: Mihari's Laboratory the chapter contained in this volume is meant as a sort-of spin-off from the main series that focuses on other characters that he hopes to create more of in the future.
Onimai

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

## Information

### Places of Interest

Yotsuba University Affiliated Junior High School
Lingerie Shop
Hair Salon
Fruit Parlor
Neon
Arcade
Oshimaen
Tachikawa Bookstore
Oyama Residence
Hozuki Residence
Ōka Residence
Murosaki Residence

## Anime

### First Appearance

Mahiro's Confusing New Body

**Onimai** (逢ニ妹, *Onimai*) is a city in Japan. It contains the homes of Mahiro and Mihari Oyama as well as all of their extended friends and classmates.

## Overview

Onimai is a city located in an unknown region of Japan. Judging by comments made by the cast and weather patterns, it is located somewhere in the northern regions of Japan, as it is cold enough to snow, and Mahiro declares going to the tropical islands in the south far enough to be considered a vacation.

It appears to be a relatively urban destination, with many shops and residential areas scattered throughout. It contains full size houses, where Mahiro and Mihari reside, as well as apartment buildings, where Kaede, Momiji, and Miyo reside.

Shops come in many shapes and sizes. There exist corner stores, street shops such as Lingerie Shop, Hair Salon, and Arcade, and even full sized shopping malls such as Neon.

There also exist schools and universities here as well. For middle schoolers, there is Yotsuba University Affiliated Junior High School which Mahiro and her friends attend. There is also an unnamed high school that Kaede Hozuki attends. Yotsuba University supposedly exists in the city as well given its affiliation with the middle school. The university that Mihari and Chitoze Azuma work at is also there. It is yet to be confirmed whether or not the two places are one and the same.

There is also an amusement park known as Oshimaen which has existed for several years, though it appears to have fallen on hard times as nowadays attendance is relatively sparse.

## Trivia

* The name of the city has never been mentioned in the manga. In the twelfth episode of the anime series "Mahiro's Future as a Sister", the city's name is confirmed via a train announcement.
Mahiro and a Good Night's Rest

**Mahiro and a Good Night's Rest** (まひろと安眠, *Mahiro To Anmin*) is the forty-first 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 3 of the anthology series on January 7, 2023.

## Summary

Mahiro has become a night owl from playing games, so Kaede offers to help her get a surefire method for getting a good night's rest.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Nayuta Tenkawa
* Chitose Azuma

## Trivia

* This chapter is written and illustrated by Imaru Adachi.
Extraordinary Amorphous Physiology

The power to **have a body composed of a flexible, amorphous substance**.

## Also Called

* Amorphism
* Homogenous Anatomy
* Formless Form/Mimicry/Physiology

## Capabilities

The user's body is composed of a flexible, amorphous substance that can be manipulated in a variety of ways. Physical attacks only harmlessly reorganize their basic shape due to their lack of vital pieces, as each part of their mass is molecularly consistent.

## Applications

* Elasticity
* Malleable Anatomy
* Matter State Shift
* Natural Weaponry
* Regenerative Healing Factor
* Unsupported Motion

## Variations

* Defunct Physiology
* Reforming
* Scattering

## Associations

* Anatomical Liberation
* Artificial Element Mimicry
* Blob Physiology
* Elemental Intangibility
* Elemental Mimicry
* Elemental Shapeshifting
* Formlessness
* Inorganic Mimicry
* Intangibility
* Organic Mimicry

## Known Users

### Cartoons/Comics

* Brainiac (*DC Comics*)
* Clayface (*DC Comics*)
* Martians (*DC Comics*)
	+ Martian Manhunter
* Sandman (*Marvel Comics*)
* Symbiotes (*Marvel Comics*)
	+ Venom
* B.O.B. (*Monsters vs Aliens*)
* Experiment 316 "Morpholomew" (*Lilo & Stitch*)
* Experiment 300 "Spooky" (*Lilo & Stitch*)

## Gallery

Clayface (DC Comics)Experiment 316 "Morpholomew" (Lilo & Stitch)
## Videos

Sand-Man Transformation Scene - Spider-Man 3 (2007) Movie CLIP HDThe Birth of Sandman Scene - Spider-Man 3 (2007) Movie CLIP HDSpider-Man vs Sandman - First Fight Scene - Spider-Man 3 (2007) Movie CLIP HDSpider-Man vs Sandman - Subway Fight Scene - Spider-Man 3 (2007) Movie CLIP HD
Mahiro and Mahiri

**Mahiro and Mahiri** (まひろとまひり, *Mahiro To Mahiri*) is the ninth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Tsuchii. It was originally published as part of Volume 1 of the anthology series on May 27, 2021.

## Summary

Mahiro wakes up one morning to find that an exact double of her has manifested.

## Characters

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

## Trivia

* This chapter is written and illustrated by Tsuchii.
Mahiro and Fluffiness

**Mahiro and Fluffiness** (まひろとふわふわ, *Mahiro To Fuwafuwa*) is the twenty-fifth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by TOMoe. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

## Summary

Mihari gets Mahiro some hair treatment and a curling iron.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter is written and illustrated by TOMoe.
Sealed!

**Sealed!** (封印されし!, *Fūin Sa Reshi!*) is the forty-ninth 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 4 of the anthology series on November 27, 2023.

## Summary

Momiji gets a temporary tattoo, but forgets to remove it before going to school.

## Characters

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

## Trivia

* This chapter is written and illustrated by Namori.
Mahiro and the Love Letter

**Mahiro and the Love Letter** (まひろとラブレター, *Mahiro To Raburetā*) is the thirteenth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Kina Kobayashi. It was originally published as part of Volume 1 of the anthology series on May 27, 2021.

## Summary

Mahiro finds a love letter in her locker.

## Characters

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

## Trivia

* This chapter is written and illustrated by Kina Kobayashi.
Tankōbon Volume 8

* Japanese (Standard Edition)
* Japanese (Special Edition)

**Volume 8** (お兄ちゃんはおしまい!⑧, *Onii-chan wa Oshimai!⑧*) is the eighth tankōbon volume of *Onimai: I'm Now Your Sister!*. It is a compilation of chapters from Volume 24, Volume 25, Volume 26, and Volume 27 of the doujinshi with added bonus chapters exclusive to this release. It was originally released on November 27, 2023 in Japan, with plans for a North American release sometime after that.

## Trivia

* Unlike the previous volume, the special edition of this release will be released on the same day as the standard edition.
* The Special Edition of this volume includes an exclusive Drama CD, the first once released since the release of Drama CD EX in 2021.
* This is the first volume of the Tankōbon series since Tankōbon Volume 5 that does not include a full-color special chapter.
Tankōbon Volume 8 Drama CD

**Volume 8 Drama CD** (お兄ちゃんはおしまい!⑧ ドラマCD, *Onīchan Wa Oshimai!⑧ Dorama CD*) is the fourth Drama CD based on *Onimai: I'm Now Your Sister!*. It was originally released exclusively with the special edition of Tankōbon Volume 8 which was released on November 27, 2023.

## Cast and Crew

### Cast

* Marika Kōno as Mahiro Oyama
* Kaori Ishihara as Mihari Oyama
* Hisako Kanemoto as Kaede Hozuki
* Minami Tsuda as Momiji Hozuki
* Kana Yūki as Asahi Ōka
* Natsumi Hioka as Miyo Murosaki
* Anna Mugiho as Cat

### Production Staff

* Original Work and Supervision: Nekotofu
* Script: Michiko Yokote
* Sound Supervision: Kohei Yoshida
* Sound Effects: Takuya Tatsuya
* Music: Daisuke Achiha, Arisa Okehama
* Recording Arrangement: Fujita Hiromi
* Recording Assistant: Akari Shirakawa
* Production Collaboration: Voice View
* Recording: Studio Sierra
* Sound Production: Bitgroove Promotion
* Illustrations: Shingo Fujii
* Special Thanks: (Onimai) Production Committee

## Trivia

* This is the first drama CD to be released since the release of Drama CD EX in 2021.
Later in the Lab

**Later in the Lab** (その後の研充室, *Sonogo No Ken Mitsuru-shitsu*) is a bonus chapter of *Onimai: I'm Now Your Sister!*. It was originally published in EX Special which was released on December 31, 2018.

## Summary

Mihari has a chat with her faculty advisor Chitose Azuma about Mahiro.

## Plot

While Mihari is working in her college lab at her computer, she cracks her fingers and notes that she has just a bit more to do today. Out of nowhere, a women with messy hair grips Mihari's shoulders from behind and calls out her name with a devious smile. Mihari freaks out a bit when this happens.

Turning around, she realizes that it is her faculty advisor Chitose Azuma and reprimands her for sneaking up on her again. Chitose laughs a bit and apologizes. A caption reveals that Chitose is Mihari's senpai at the university looking after her research.

Chitose asks her how it went, and Mihari says that Mahiro has safely become a middle schooler, all thanks to the framework that Chitose set up. She also notes that she seems to be getting used to it. Chitose smiles and notes that that's the most important thing, but notes that if that's the case she'd be very curious about Mahiro's life at school.

She tells Mihari that her last report was interesting, but to be sure to do the next report on Mahiro's life at middle school. Mihari notes that she's pretty sure that would be impossible, and Chitose sighs realizing that she's right. Chitose decides that she'll step in and help again, but Mihari tells her to stop with the crimes. She thinks to herself that it really feels like Chitose will do anything.

## Characters

* Mihari Oyama
* Chitose Azuma

## Trivia

* First appearance of Chitose Azuma
* Due to this chapter being published exclusively in EX Special, it has not received an official English translation or release, though an English fan translation is available for purchase at DLSite alongside the Japanese release.
* The events of this chapter take place during the events of the previous chapter "Mahiro and the Uneventful Holiday", before Mihari returns home to Mahiro.
* According to Nekotofu, the events of this chapter, it's predecessor, and the corresponding Drama CD take place after the events of "Mahiro the Own-Home Security Guard", and "Mahiro Helps Out". It also takes place before the events of "Mahiro and the Middle Schoolers" as Mahiro has not gone back to middle school yet as evidenced by her late night routines.
* Mihari references how Mahiro recently started middle school again in "Mahiro's First Day", and it is revealed that Chitose was the one who dummied up the identification documents to allow it to happen.
Yu Ōka

## Information

### Family

Asahi Ōka (daughter)
Yuya Ōka (son)

## Manga

### First Appearance

Kaede's Nickname

**Yu Ōka** (桜花 (おうか)  ゆう, *Ōka Yuu*) is the mother of Asahi Ōka and Yuya Ōka.

## Etymology

* The name **Yu** means "brave", "leader", "gentle" (**yu**).
* The name **Ōka** means "cherry blossoms" (桜花) (**Ōka**).

## Trivia

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

## Appearances

### Manga

* Kaede's Nickname
* Mahiro and Visitation Day
Girls and Boys

* English
* Japanese

**Girls and Boys** (女子と男子, *Joshi To Danshi*) is Chapter 53.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 18 of the doujinshi which was released on August 14, 2021.

## Summary

Mahiro tries to figure out why Satsuki and Minori pick on the boys of their class.

## Plot

Satsuki and Minori continue to criticize Yuta and Minato for looking at Miyo. Satsuki says that there is nothing to see, and Minori calls them the worst. Yuta notes that the two seem to be having fun with this.

Nayuta is tired of another fight, and notes that this class always resorts to violence. Mahiro notes that it looks like they get along pretty well to her. Momiji tells Mahiro that rumor has it that those girls are interested in Yuta and Minato. Mahiro understands, finally getting that they pick on those two since they secretly like them.

Miyo disagrees, instead imagining a scenario where Satsuki and Minori hate boys because they secretly love each other, with the thought devolving into a Yuri scenario after Minori suggests "why don't we girls have some fun?". Miyo gets aroused and notes that she thinks it goes more like this. Mahiro thinks to herself that she doesn't think so, while Nayuta wonders what Miyo was just imagining there.

It is revealed that their classmate Aoi loves boy-love (BL), and imagines a scenario where Yuta and Minato are a couple, much to the boys' confusion.

## Characters

* Mahiro Oyama
* Kaede Hozuki
* Momiji Hozuki
* Miyo Murosaki
* Nayuta Tenkawa
* Minato Senkawa
* Yuta Sakurada
* Satsuki Tadaka
* Minori Shiina
* Aoi Tachikawa

## Trivia

* The events of this chapter take place shortly after the events of the previous chapter "Mahiro, the Sun, and the Northern Wind".
Yuriko Kitahara

* Anime
* Manga

**Yuriko Kitahara** (北原 (きたはら)  ゆりこ, *Kitahara Yuriko*) is Mahiro Oyama's Home Economics teacher at Yotsuba University Affiliated Junior High School. She is voiced by Rika Nagae in the anime series

## Personality

Yuriko is a kind and caring teacher. She appears to value students learning mostly on their own, but is otherwise willing to teach whenever possible.

In the anime, she was shown to be aware of Miyo's poor cooking skills and was thus nervous when asked to try a cookie that her group had made.

## Etymology

* The name **Yuriko** means "lily" (百合) (**yuri**) and "child" (子) (**ko**).
* The name **Kitahara** means "north" (北) (**kita**) and "field, plain" (原) (**hara**).

## Appearances

### Manga

* Mahiro the Patissier
* Mahiro's Big Secret (Part 1)
* Mahiro and the Charming School Festival (Part 1)
Mahiro and the Cliché Plot

**Mahiro and the Cliché Plot** (まひろと恒例のアレ, *Mahiro To Kōrei No Are*) is the fifteenth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Suka. It was originally published as part of Volume 1 of the anthology series on May 27, 2021.

## Summary

Mahiro desperately tries not to wet herself while walking home with Momiji.

## Characters

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

## Trivia

* This chapter is written and illustrated by Suka.
Tankōbon Volume 6

* English
* Japan

**Volume 6** (お兄ちゃんはおしまい!⑥, *Onii-chan wa Oshimai!⑥*) is the sixth tankōbon volume of *Onimai: I'm Now Your Sister!*. It is a compilation of chapters from Volume 17, Volume 18, Volume 19, and Volume 20 of the doujinshi with added bonus chapters exclusive to this release. It was originally released on April 27, 2022 in Japan, and on October 25, 2022 in North America.
Siblings Share the Kotatsu

* English
* Japanese

**Siblings Share the Kotatsu** (兄妹とコタツ, *Kyōdai To Kotatsu*) is Chapter 15.5 of *Onimai: I'm Now Your Sister*. It was originally published in Volume 5 of the doujinshi which was released on April 30, 2018.

## Plot

Mahiro comes down form upstairs, remarking that she's so cold and that it's getting colder everyday. When she comes into the living room, she becomes surprised to see Mihari resting all snug beneath a kotatsu. Mahiro beams at the kotatsu being out, and Mihari tells Mahiro that she figured that it was about the time to bring it out. Mahiro suggests that they set up one in her room as well, but Mihari shoots down the idea by pointing out that if they did that Mahiro would never leave her room.

Mahiro decides that instead she'll just move out there and comes back down with a large bag. She opens the bag and places a stack of books on the kotatsu, much to Mihari's surprise. Mahiro explains that now that she has space on her shelves, she thought about getting something to fill them, mainly to replace the hentai manga that she recently packed away. Mihari notices that all the books are shojo manga. She smiles at how girly Mahiro is becoming, but Mahiro asks her what is wrong with that. Mahiro even tells Mihari that she can read them also if she wants, an offer that Mihari accepts.

The two start reading, and are shocked to see that shojo manga is much more steamy than it used to be. Deciding that this is awkward, Mihari remarks that she'd rather watch some TV, to which Mahiro agrees.

While watching, Mihari even starts feeding Mahiro some pieces of fruit.

Completely relaxed, Mihari notes that she is having fun reading comics and watching TV as a lazy day with no obligations. She remarks that this is heaven, then in horror realizes that if this keeps up she'll end up just how Mahiro did.

Mihari gets up abruptly and decides that she's changed her mind and is getting rid of the kotatsu, much to Mahiro disappointment and confusion. Mahiro remarks that that is so cruel of her to do.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* Mahiro indirectly references boxing up all of her hentai manga in "Mahiro's Wholesome Playdate".
Mahiro Goes Back to Middle School

**Mahiro Goes Back to Middle School** (まひろと二度目の中学生, *Mahiro to Nidome no Chūgakusei*) is the sixth episode of the *Onimai: I'm Now Your Sister!* anime series. It originally aired on AT-X, Tokyo MX, and BS11 on February 9, 2023.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Kaede Hozuki
* Momiji Hozuki
* Asahi Ōka
* Miyo Murosaki
* Mari Nishinomiya
* Nemu Fujimi
* Yuta Sakurada
* Minato Senkawa
* Rin Minakata
Whisper! Mihari-chan

**Whisper! Mihari-chan** (ささやけ!みはりちゃん, *Sasayake! Mihari-chan*) is the forty-seventh chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Hori. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Summary

Mihari becomes a Yumetuber in order to raise money for her research lab following budget cuts.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Nayuta Tenkawa
* Chitose Azuma

## Trivia

* This chapter is written and illustrated by Hori.
Tsurara Kamito

* Anime
* Manga

**Tsurara Kamito** (神渡 つらら, *Kamito Tsurara*) is a waitress at the Fruit Parlor where Mahiro, Momiji, Asahi, and Miyo go and get parfaits after Mahiro meets the latter two for the first time. She is the one who brings the parfaits to the table where the girls are sitting. She is later seen working as a shrine maiden. She is voiced by Hina Yōmiya in the anime series.

## Appearance

Tsurara's appearance greatly differs between the manga and the anime.

In the anime, she is shown to have long wavy dirty-blonde hair that reaches her lower back and includes a brown headband, with gold colored eyes. She is shown to wear a waitress uniform that consists of white shirt with a purple dress apron and matching bowtie. Later, she is shown wearing a standard red and white shrine maiden outfit.

In the manga, her hair is darker and shorter, and has no headband. Her uniform contains the white shirt, with a dark colored apron and no bowtie.

## Personality

Not much is known about Tsurara's personality, but she is shown to act kind towards customers as she brings them their parfaits.

## Etymology

* The name **Tsurara** means "icicle".
* The name **Kamito** means "god" (神) (**kami**) and "delivery" (渡) (**to**).

## Trivia

* Tsuara's name was not revealed in either the manga or the anime. Her name comes from a Q&A on *Pixiv* with Nekotofu. In the anime episode where she appears, she is credited as "clerk".

## Appearances

### Anime

* Mahiro Goes Back to Middle School
* Mahiro Rings in the New Year
Miyo's Refusal

* English
* Japanese

**Miyo's Refusal** (みよのこだわり, *Miyo No Kodawari*) 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 the events of the previous chapter, Asahi tries to give Miyo a hug.

## Plot

While Asahi is giving Momiji a hug, Mahiro comments that she sure is a friendly gal. Miyo on the other hand is aroused by the situation and smiles in heaven at the situation.

Asahi abruptly finishes and turns to Miyo saying that it's her turn. Miyo tries to refuse, saying that just watching is more than enough for her, but Asahi begins to hug her anyway.

As Mahiro hears Miyo's screams muffled by Asahi's bust, she thinks to herself about how much of a troublesome kid Asahi is.

## 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 before the events of "Momiji's Nickname".
* This chapter was released as the first part of Chapter 21.5 in Japan, but was reclassified as a bonus chapter for its English release.
Tankōbon Volume 4

* English
* Japan

**Volume 4** (お兄ちゃんはおしまい!④, *Onii-chan wa Oshimai!④*) is the fourth tankōbon volume of *Onimai: I'm Now Your Sister!*. It is a compilation of chapters from Volume 11, Volume 12, Volume 13, and Volume 14 of the doujinshi with added bonus chapters exclusive to this release. It was originally released on July 27, 2020 in Japan, and on January 25, 2022 in North America.
Yuta Sakurada

* 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

Rena Aoshima

**Yuta Sakurada** (桜田 (さくらだ)  ゆうた, *Sakurada Yuuta*) is a middle school student at Yotsuba University Affiliated Junior High School, a classmate of Mahiro Oyama, and the best friend of Minato Senkawa. He is voiced by Rena Aoshima in the anime series.

## Personality

Yuta is a middle-school aged boy who loves playing video games, just like his best friend Minato. Both boys are also in love with Mahiro Oyama who shares their interest, though neither is aware of her true identity. The two have a longstanding desire to go out with Mahiro, and there appears to be an unspoken agreement between the two that they would each be happy with the other if one of them gets to date her.

For a long time, there was not much in the way to differentiate the two in terms of personality. However, it has been shown that Yuta is the more masculine of the two as he always uses male avatars in the games he plays, and he was eager to change out of the maid uniform he was forced to wear for the maid cafe that Class 2-B put on during the cultural festival. By contrast, Minato plays female characters in the games he plays and actually didn't want to stop being a maid when the cultural festival was over.

## Early Life

During grade school, Yuta was in the same class as Momiji Hozuki, Asahi Ōka, Nemu Fujimi, Nodoka Fushimi, Aoi Tachikawa, Akira Nakai, and Minato Senkawa. At some point later, he and Minato played a game of soccer with Momiji and Asahi where Yuta acted as his team's goalie. Asahi scored the winning kick despite Yuta's best attempts to stop it. Despite this, he and Minato didn't let losing get them down.

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

## Etymology

* The name **Yuta** means:
	+ "excellence, superiority, gentleness" (優), "permanence" (悠), or "brave"' (勇) (**yu**) combined with
	+ "thick, big, great" (太) (**ta**).
* The name **Sakurada** means "cherry blossoms" (桜) (**sakura**) and "field" (田) (**da**).

## Appearances

### Manga

* Mahiro's First Day
* Mahiro's Difficult Class
* Mahiro and Conversation
* Asahi and Momiji
* Mahiro and the Allure of Bare Legs
* Mahiro on Valentine's Day
* Mahiro and the Adult's Only Section
* Mahiro's "Something"
* Mahiro Pretties Up
* Mahiro's Big Secret (Part 1)
* Mahiro and the Perfume
* Mahiro and Visitation Day
* 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 Masculine Ego
* Mahiro's Field Day
Tankōbon Volume 1

* English
* Japan

**Volume 1** (お兄ちゃんはおしまい!①, *Onii-chan wa Oshimai!①*) is the first tankōbon volume of *Onimai: I'm Now Your Sister!*. It is a compilation of chapters from Volume 1, Volume 2, Volume 3, and Volume 4 of the doujinshi with added bonus chapters exclusive to this release. It was originally released on June 27, 2018 in Japan, and on August 31, 2021 in North America.

## Trivia

* The Official English Translation of the manga gives the name of Chapter 9.5 as this chapter as "Mahiro and Keade's Secret" officially, but lists it is "Mahiro and the Secret" in the table of contents.
Mahiro, Nayuta, and Transforming Heroines

**Mahiro, Nayuta, and Tranforming Heroines** (まひろとなゆたと変身ヒロイン, *Mahiro to Nayuta To Henshin Hiroin*) is the fortieth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by 9℃. It was originally published as part of Volume 3 of the anthology series on January 7, 2023.

## Summary

Mahiro invites Nayuta to see a new anime movie with her.

## Characters

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

## Trivia

* This chapter is written and illustrated by 9℃.
Mihari ♂

**Mihari ♂** (みはり♂, *Mihari ♂*) is the twenty-eighth chapter of the *Onimai: I'm Now Your Sister!* anthology series. It is written and illustrated by Luchief. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

## Summary

Mihari thinks that she may have grown a "comrade" after drinking Chitose's drink and asks Mahiro to make sure.

## Characters

* Mahiro Oyama
* Mihari Oyama
* Chitose Azuma

## Trivia

* This chapter is written and illustrated by Luchief.
Takeshi Haijima

* 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

Fumiko Uchimura

**Takeshi Haijima** (拝島 (はいじま)  たけし, *Haijima Takeshi*) is a middle school student at Yotsuba University Affiliated Junior High School and a classmate of Mahiro Oyama. He is voiced by Fumiko Uchumura in the anime series.

## Etymology

* The name **Takeshi** means "milliary" and "warrior" (たけし) (**takeshi**).
* The name **Haijima** means "worship" (拝) (**hai**) and "island" (島) (**jima**).

## Appearances

### Manga

* Mahiro on Valentine's Day
* Mahiro and the Charming School Festival (Part 1)
* Mahiro and the Charming School Festival (Part 2)
* Mahiro's Field Day

### Anime

* Mahiro Ponders Boobs and Identity
* Mahiro Pretties Up
The Medicine

**The Medicine** (例の薬, *Rei No Kusuri*) is the ninteenth 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 2 of the anthology series on April 27, 2022.

## Summary

Mihari messes up while subsituting ingredients for Mahiro's new drug dosage, casuing Mahiro's hormone levels to wildly fluctuate.

## Characters

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

## Trivia

* This chapter is written and illustrated by Masakuni Igarashi.
Tankōbon Volume 5

* English
* Japan

**Volume 5** (お兄ちゃんはおしまい!⑤, *Onii-chan wa Oshimai!⑤*) is the fifth tankōbon volume of *Onimai: I'm Now Your Sister!*. It is a compilation of chapters from Volume 14, Volume 15, Volume 16, and Volume 17 of the doujinshi with added bonus chapters exclusive to this release. It was originally released on May 27, 2021 in Japan, and on March 22, 2022 in North America.
The Boys' Shift Change

* English
* Japanese

**The Boys' Shift Change** (男子と交代時間, *Danshi to Kōtai Jikan*) is Chapter 66.5 of *Onimai: I'm Now Your Sister!*. It was originally published in Volume 22 of the doujinshi which was released on August 13, 2022.

## Summary

After sucessfully serving in the maid cafe for Class 1-B, Yuta and Minato prepare to change back into their normal clothes.

## Plot

Shortly after the end of the second shift at the maid cafe at the cultural festival, Yuta and Minato head to the back room to change out of their outfits.

Yuta notes that he thought that being on the same shift as Mahiro might be a bonus, with Minato finishing that it seems life doesn't work out that easy.

Yuta says that they should just get changed and put all of this behind them, starting to strip out of his outfit. Minato agrees, but then dreamily says in a trance that a part of him doesn't want to give it up. Yuta yells at him to snap out of it.

Soon after, Mahiro heads into the back room to get changed as well. She opens the curtains to a random stall and catches the boys half-undressed; they are back in their casual clothes but are still wearing the wigs. The two let out a shriek and Mahiro closes the curtains and apologizes. She then realizes that it was actually the boys.

The next day, the boys are in shock over what happened. Yuta notes that he made a weird noise before he could stop himself with Minato agreeing. Mahiro frets over being the cause of it while Satsuki tries to call out to the boys to no avail.

It is revealed that during the cultural festival, Nodoka and Nemu were very excited about Minato dressed as a maid, swarming him during his shift much to his embarassment. Mari-chan-sensei sees this from afar and is amazed by the level of talent that Minato is displaying.

## Characters

* Mahiro Oyama
* Satsuki Tadaka
* Yuta Sakurada
* Minato Senkawa
* Nemu Fujimi
* Nodoka Fushimi
* Mari Nishinomiya

## Trivia

* The events of this chapter take place during the events of the previous chapter "Mahiro and the Charming School Festival (Part 2)".
Triple ★ Push!

**Triple ★ Push!** (3倍★プッシュ！, *3-Bai ★ Pusshu!*) is the first 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 1 of the anthology series on May 27, 2021.

## Summary

Mahiro starts acting extremely affectionate towards Mihari.

## Characters

* Mahiro Oyama
* Mihari Oyama

## Trivia

* This chapter is written and illustrated by Namori, who is most famous for being the creator of *YuriYuri*, *Ōmuro-ke*, Reset!, and *Touzainanboku!*.
Tankōbon Volume 3

* English
* Japan

**Volume 3** (お兄ちゃんはおしまい!③, *Onii-chan wa Oshimai!③*) is the third tankōbon volume of *Onimai: I'm Now Your Sister!*. It is a compilation of chapters from Volume 7, Volume 8, Volume 9, and Volume 10 of the doujinshi with added bonus chapters exclusive to this release. It was originally released on September 27, 2019 in Japan, and on November 30, 2021 in North America.

## Trivia

* The English language release of the four parts of Chapter 21.5 classifies them instead as special chapters. Also, Part 2 is ordered between Chapter 25.5 and Chapter 26.
* The English language release of the two parts of Chapter 24.5 classifies them instead as bonus chapters.
Tomoya Kiba

* 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

Yoshie Saito

**Tomoya Kiba** (木場 ともや, *Kiba Tomoya*) is a middle school student at Yotsuba University Affiliated Junior High School and a classmate of Mahiro Oyama. He is voiced by Yoshie Saito in the anime series.

## Etymology

* The name **Tomoya** can mean:
	+ "friend" (友),"know" (知), "intellect" (智), "together" (共), "companion" (朋) "morning/dynasty" (朝)
	+ "to be" (也), "arrow" (矢), "how (interrogative particle)" (哉), "more and more" (弥 or 彌), "eight" (八),
* The name **Kiba** means "wood" (木) (**ki**) and "place" (場) (**ba**).

## Appearances

### Manga

* Mahiro on Valentine's Day
* Mahiro Pretties Up
* Mahiro and the Charming School Festival (Part 1)
* Mahiro and the Charming School Festival (Part 2)
* Mahiro's Field Day

### Anime

* Mahiro Ponders Boobs and Identity
* Mahiro Pretties Up
Tankōbon Volume 7

* English
* Japanese (Standard Edition)
* Japanese (Special Edition)

**Volume 7** (お兄ちゃんはおしまい!⑦, *Onii-chan wa Oshimai!⑦*) is the seventh tankōbon volume of *Onimai: I'm Now Your Sister!*. It is a compilation of chapters from Volume 21, Volume 22, Volume 23, and Volume 24 of the doujinshi with added bonus chapters exclusive to this release. It was originally released on January 7, 2023 in Japan, with plans for a North American release on July 25, 2023.
Truant Officer

* Anime
* Manga

The **Truant Officer** is a local truant officer who's job it is to roam the Arcade and locate students that have skipped school. He is voiced by Mitsuki Nakamura in the anime series.

## Appearance

The turant officer is shown to be a tall and thin man with short dark brown hair, and glasses that obscure his eyes. He is shown to be wearing a white collared shirt with a green band on his arm that reads 'Truant Officer'.

## Personality

He is shown to have a somewhat deadpan attitude, but also takes his job very seriously. Due to his method of pressing for questions that Mahiro couldn't answer, he came off to her as a bit frightening.

## History

When Mahiro visits the Arcade and begins playing a rhythm game in "Mahiro's Little Adventure", he believes her to be a student who has skipped school and begins to watch her. Mahiro caught him out of the corner of her eye, and believed that he's a stalker who preys on unsuspecting girls.

Eventually, he put his hand on Mahiro's shoulder to talk to her, causing Mahiro to get frightened. He then proceeded to ask Mahiro what her name and class was, and what school she went to. Mahiro had no way to answer as she didn't go to school as of yet.

Eventually, he let Mahiro go, but not without leaving her so frightened that she refused to leave the house again for awhile.

## Trivia

* The Truant Officer's name is never revealed in either the manga or the anime. In the anime, he is credited as 'Counselor'.

## Appearances

### Anime

* Mahiro Discovers Adventure and Social Gatherings