Onimai: I'm Now Your Sister!

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Onimai: I'm Now Your Sister!
File:Onimai, I'm Now Your Sister! volume 1 cover.jpg
Cover of the first volume
お兄ちゃんはおしまい!
(Onii-chan wa Oshimai!)
Genre Comedy,[1] slice of life[2]
Manga
Written by Nekotofu
Published by Ichijinsha
English publisher
Demographic Seinen
Magazine Monthly Comic Rex <templatestyles src="Noitalic/styles.css"/>(April 27, 2019–present)
Original run 2017 – present
Volumes 8 (List of volumes)
Anime television series
Directed by Shingo Fujii
Produced by
  • Takurou Hatakeyama
  • Mitsuteru Hishiyama
Written by Michiko Yokote
Music by
  • Daisuke Achiba
  • Alisa Okehazama
Studio Studio Bind
Licensed by Crunchyroll
Network AT-X, Tokyo MX, BS11
Original run January 5, 2023 – March 23, 2023
Episodes 12 (List of episodes)
Portal icon Anime and Manga portal

Onimai: I'm Now Your Sister! (Japanese: お兄ちゃんはおしまい! Hepburn: Onii-chan wa Oshimai!?, lit. Big Brother is Done For!)[lower-alpha 1] 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 aired from January to March 2023, receiving positive reception from critics and gaining high ratings, although it received a mixed reception from English language critics.

Plot

The series follows Mahiro Oyama, an otaku and NEET who lives alone with his scientist younger sister Mihari. One day he wakes up to find himself transformed into a young girl, a result of one of Mihari's experiments. Mahiro must now learn to become comfortable in his new body whilst living life as a middle school girl.

Characters

Mahiro Oyama (緒山 真尋 Oyama Mahiro?)[lower-alpha 2]
Voiced by: Marika Kōno (drama CD, anime)[2]
The protagonist of the series, Mahiro was previously an otaku man living with his younger sister Mihari until he was turned into a girl as a result of one of her experiments. Mahiro ends up transferring to a middle school.
Mihari Oyama (緒山 みはり Oyama Mihari?)
Voiced by: Kaori Ishihara (drama CD, anime)[2]
Mahiro's younger sister and a scientist. She turned Mahiro into a girl as a result of one of her experiments. Because of her high intelligence, she skipped several grades and is now in a university.
Kaede Hozuki (穂月 かえで Hozuki Kaede?)
Voiced by: Hisako Kanemoto (drama CD, anime)[3]
Mihari's classmate during middle school and a gyaru. She is Momiji's older sister. She is good at cooking and using cosmetics. She also works part-time at a fast food restaurant.
Momiji Hozuki (穂月 もみじ Hozuki Momiji?)
Voiced by: Minami Tsuda (drama CD, anime)[3]
Kaede's younger sister and Mahiro's classmate. She has a tomboyish personality and greatly admires Mahiro. She has been friends with Asahi for several years.
Asahi Ōka (桜花 あさひ Ōka Asahi?)
Voiced by: Kana Yūki[4]
Mahiro's classmate. She has an energetic personality but tends to not perform well in tests. She also calls Mahiro by many nicknames.
Miyo Murosaki (室崎 みよ Murosaki Miyo?)
Voiced by: Natsumi Hioka[4]
Mahiro's classmate. She is interested in yuri and tries to hide it poorly. She enjoys imagining her friends in romantic situations. Miyo is notably bustier than her classmates and embarrassed about it.
Nayuta Tenkawa (天川 なゆた Tenkawa Nayuta?)
Mahiro's classmate who joins during their second year of middle school. She is a bright, yet shy girl who is the ward of Mihari's faculty advisor Chitose Azuma, who is having her monitor Mahiro without Mihari's knowledge. After revealing to Mahiro that she knows the truth about her, she is quickly accepted into Mahiro's group of friends. She is very knowledgeable due to the many hours she spent in the university library, and speaks in a very polite tone with everyone she encounters.
Chitose Azuma (吾妻 ちとせ Azuma Chitose?)
Voiced by: Mayu Mashiro (drama CD)
Mihari's faculty advisor and senpai at the university Mihari attends, as well as Nayuta's guardian. She made key contributions that allowed for the creation of the drug that turned Mahiro into a girl. Although Mihari believes that she did this out of the goodness of her heart, she is actually using Mihari to fulfill an unknown agenda and enrolled Nayuta into the same class as Mahiro to spy on her without Mihari's knowledge.

Media

Manga

Written and illustrated by Nekotofu, Onimai: I'm Now Your Sister! began serialization online via Pixiv and other platforms in 2017.[1] It also started in Ichijinsha's Monthly Comic Rex magazine on April 27, 2019.[5] As of January 2023, seven tankōbon volumes have been released by Ichijinsha.[6] In North America, Kodansha USA is publishing the series digitally in English.[7]

Volume list

No. Japanese release date Japanese ISBN English release date English ISBN
1 June 27, 2018[8] ISBN 978-4-7580-6750-8 August 31, 2021[9] ISBN 978-1-63-699336-2
2 January 26, 2019[10] ISBN 978-4-7580-6792-8 October 5, 2021[11] ISBN 978-1-63-699337-9
3 September 27, 2019[12] ISBN 978-4-7580-6828-4 November 30, 2021[13] ISBN 978-1-63-699373-7
4 July 27, 2020[14] ISBN 978-4-7580-6883-3 January 25, 2022[15] ISBN 978-1-63-699431-4
5 May 27, 2021[16] ISBN 978-4-7580-6917-5 March 22, 2022[17] ISBN 978-1-63-699481-9
6 April 27, 2022[18] ISBN 978-4-7580-6977-9 October 25, 2022[19] ISBN 978-1-68-491505-7
7 January 7, 2023[6][20] ISBN 978-4-7580-8400-0
978-4-7580-8401-7 (SE)		 — —

Anime

An anime television series adaptation was announced on April 22, 2022. It is produced by Studio Bind and chief directed by Shingo Fujii, with Michiko Yokote as head writer, character designs handled by Ryo Imamura, and music composed by Daisuke Achiba and Alisa Okehazama.[1][21] The series aired from January 5 to March 23, 2023, on AT-X and other networks.[3][22] The opening theme song is "Identeitei Meltdown" (アイデン貞貞メルトダウン?) by Enako feat. P Maru-sama, while the ending theme song is "Himegoto*Crisisters" (ひめごと＊クライシスターズ?) by Marika Kōno, Kaori Ishihara, Hisako Kanemoto, and Minami Tsuda.[23] Crunchyroll has licensed the series outside of Asia.[24] Medialink has licensed the series in Asia-Pacific.[25]

Episode list

No. Title [26][27] Directed by [26] Written by [26] Storyboard by [26] Original air date [28]
1 "Mahiro's Confusing New Body" (lit. Mahiro and the body that can't get off) Shingo Fujii Michiko Yokote Shingo Fujii January 5, 2023 (2023-01-05)
Mahiro Oyama is a hikikomori living with his grade-skipping wunderkind little sister Mihari who is a researcher. One day he wakes up as a young girl after being drugged by Mihari, as a part of her Big Brother Rehabilitation project. She forces him to take a shower and wear feminine clothes upon a health checkup. Seeing him obsess over his newfound interest in a yaoi visual novel, she takes him out for a jog and buys him a new bra; he refused to have one on for the jog in an attempt to hang onto his ever-decreasing masculinity.
2 "Mahiro's Time of the Month" (lit. Mahiro and that time of the month) Eri Irei Michiko Yokote Eri Irei January 12, 2023 (2023-01-12)
The water heater is broken for the night, so Mihari and Mahiro visit a public bath, where the former teaches him about hair care; quickly exhausted, he leaves to reminisce about the time when he was the one helping his little sibling bathe. Upon finishing breakfast, Mahiro naturally tries out new hairstyles, which Mihari records for her research. As nearly one month passes since start of the transition, Mahiro has his first menstruation and Mihari takes care of him.
3 "Mahiro's Close Encounter" (lit. Mahiro and the encounter with the unknown) Yasuhiko Akiyama Miharu Hirami Yasuhiko Akiyama January 19, 2023 (2023-01-19)
Mahiro meets Kaede Hozuki, a gyaru and friend of Mihari, who cooks him lunch and puts make-up on him. In a shopping mall, the three buy new clothes before watching a film—in the middle of which, Mahiro runs to the bathroom but urinates himself before he reaches it. Kaede helps him clean up and buys him new panties. Mihari catches a cold from the movie theater, so Mahiro does the housework, incompetently.
4 "Mahiro's New Friend" (lit. Mahiro and new friends) Hayato Kakinokida Michiko Yokote Hayato Kakinokida January 26, 2023 (2023-01-26)
Mihari catches Mahiro mimicking an anime magical girl character before departing for campus, leaving him to laze around until morning. Mahiro loses in a video game match against Mihari and thus shops for groceries, where he befriends Momiji, Kaede's tomboyish middle school sister. Days after, Mahiro swiftly tidies up his room when he sees the two sisters come over; however, he accidentally knocks over his hentai manga collection in front of Momiji.
5 "Mahiro Discovers Adventure and Social Gatherings" (lit. Mahiro and guidance and invitations) Yukihiro Komawo Michiko Yokote Tomomi Mochizuki February 2, 2023 (2023-02-02)
Mahiro voluntarily goes outside to buy himself anime-imprint folders and gets caught by a truant officer at an arcade; he escapes the traumatic encounter and a worried Mihari thinks of initiating her plan B. Mihari takes him to a hair salon for a new style, where he is overloaded by small talks. The Oyamas and Hozukis plan a trip to an onsen while having a dinner at the latter's residence.
6 "Mahiro Goes Back to Middle School" (lit. Mahiro and a second time as a middle schooler) Nobuyoshi Arai Miharu Hirami Nobuyoshi Arai February 9, 2023 (2023-02-09)
Mahiro gets to know Momiji's friends Asahi and Miyo, and learns that he has been enrolled in middle school in the same class as them, which helps his social anxiety in the first days. Still not fully integrated into his new body, he makes mistakes such as using the boys' restroom and changing clothes in the classroom. Miyo tells the teacher that Mahiro is having menstrual cramps, and as a result he does not need to run a race in physical education.
7 "Mahiro's Role-Playing Game" (lit. Mahiro and role-play) Ayumu Uwano Miharu Hirami Ayumu Uwano February 16, 2023 (2023-02-16)
Despite studying at least a week prior, Mahiro faces difficulties in the final examinations; in addition, he sleeps through the mathematics phase, one of the only subjects he is good at. He talks with two male classmates who share the same interests in a video game series, but quickly becomes depressed realizing that the installment he plays had been released before they were born. In home economics, Mahiro and his friends bake black tea cookies, the recipe of which is taught to him and Momiji by Kaede.
8 "Mahiro's First Girls Sleepover" (lit. Mahiro and a first all-female gathering) Hironori Tanaka Michiko Yokote Hironori Tanaka February 23, 2023 (2023-02-23)
During winter break, Mihari secretly invites Mahiro's friends to a sleepover. They play a video game together and take a bath. Mahiro with Mihari, along with Momiji her friends, reminisce about their pasts. A game of rock-paper-scissors escalates into a pillow fight. Asahi tells everyone a horror story before falling asleep with Mahiro's comforter; as he slides over to Momiji, she mistakes him for a monster and urinates in her futon. Mahiro washes it and takes the blame for it the next morning.
9 "Mahiro Rings in the New Year" (lit. Mahiro and year-end holidays) Yasuhiko Akiyama Michiko Yokote Mamoru Kurosawa March 2, 2023 (2023-03-02)
Mihari and Kaede catch their younger siblings stalking them at a Christmas market and decide to spend quality time together. Mihari forces him to visit a shrine to ring in the New Year and offer prayers with them, joined by Asahi and Miyo. Kaede takes them all back home for dinner and lets Mihari try amazake for the first time; after a single drink she becomes heavily intoxicated and shows everyone strong romantic affections.
10 "Mahiro Ponders Boobs and Identity" (lit. Mahiro and boobs and identity) Aose Sakaguchi Miharu Hirami Aose Sakaguchi March 9, 2023 (2023-03-09)
On the first day of school after the break, Mahiro and his colleagues discuss fashion during the cold months. Kaede takes tutoring lessons from Mihari and, as a reward, massages her and Mahiro. On Valentine's Day, he trades chocolate bars for miscellaneous sweets with his classmates, buying an additional one for his sister in the evening. He catches the two male classmates attempting to sneak into the adults-only section of a bookstore before encountering the yuri-affectionate Miyo. The girls share a meal of crêpes together.
11 "Mahiro Pretties Up" (lit. Mahiro and girls' tastes) Shinji Nagata & Yukihiro Komawo Miharu Hirami Shinji Nagata March 16, 2023 (2023-03-16)
The class talks about a trendy book about astrology, a topic which Mihari despises. In an attempt by a chūnibyō Momiji—who believes in astrology—to get Mahiro's birth date, he realizes it is on the current day. His friends surprise him with a party the next day and give him presents, one of which is a lipstick from Kaede. He wears it to school, which gets the class' attention as it is against the rules. At home, Kaede dresses up the Oyama siblings with gyaru-style clothing.
12 "Mahiro's Future as a Sister" (lit. Mahiro's ending and future) Shingo Fujii Michiko Yokote Shingo Fujii March 23, 2023 (2023-03-23)
As planned, they stay at an onsen together with Asahi and Miyo for one night. In the middle of playing with his friends at the pool, Mahiro's drug slowly wears off and his penis grows back. Without anyone noticing it, he storms back to the hotel room with Mihari who presents him with a backup potion, telling him to consider that it will make him stay female for a bit longer if taken. After taking the evening's time to reflect on it, he decides to drink it. On the way home by train, Mihari reveals to him that her conspiring rehabilitation project has been overly successful.

Production

Prior to creating the series, Onimai's author, Nekotofu, was a fan of the "gender bender" genre of anime and manga that included such works as Ranma ½, Kashimashi: Girl Meets Girl, and Idol Pretender (ja).[29] As such, Nekotofu had harbored a longtime interest in creating his own such series, and was inspired to do so after seeing Your Name.[30][31] He was also motivated by the positive response to a doujinshi he had created which also featured similar gender-bending elements. Nekotofu began self-publishing Onimai on Pixiv in January 2017, and later on Niconico Seiga, where it became significantly more popular.[29] In April 2019, the manga began serialization in Ichijinsha's Monthly Comic Rex magazine.[1][5] Nekotofu continues to self-publish the series online and produce doujinshi with permission from Ichijinsha.[29]

Reception

Accolades

Onimai: I'm Now Your Sister! ranked fifth in Da Vinci's Next Manga Award 2018 in the web manga category in August 2018,[32] and ranked ninth in Web Manga Overall Election 2019 in October 2019.[33] The manga also ranked third in AnimeJapan's Manga We Want to See Animated Ranking in 2020,[34] and ranked seventh in 2021.[35]

Critical reception

The series received positive reviews and was ranked by viewers in Japan as the top-rated TV anime of the Winter 2023 season on both Niconico and anime ranking website Anikore.jp.[36][37]

In English-language coverage of the series, critical responses to the Onimai anime were mixed.[38][39][40] Reviewers generally criticized the premise and lolicon themes, while praising the animation and music, which was near-universally deemed to be of exceptional quality.[38][41][40] Reviewers in the "Winter 2023 Anime Preview Guide" of Anime News Network criticized the depiction of Mahiro's body in the first episode, which Caitlin Moore called a "pedophilic gaze."[38] However, Moore and Chiaki Hirai of Anime Feminist said that the manga was not sexualized to the same degree, and believed the anime's production team was responsible for introducing this perspective to the material.[38][42] Rebecca Silverman was softer in her criticisms, describing the fan service as "relatively toned down" but stated that the narrative premise was "mean".[38] Richard Eisenbeis said the premise was "horrific," and also called the plot point of Mahiro's sex change provoking a newfound interest in yaoi "rooted in gender essentialism."[38]

Writing about the first episode for Anime Feminist, Cy Catwell called Onimai "fucking disgusting," citing many of the same criticisms as the Anime News Network writers. Catwell was particularly critical of the plot point involving Mihari's nonconsensual experimentation on Mahiro. Catwell expressed that though they had not read the manga and could not speak to its differences, they were "fiercely put off" of reading it.[41] Chiaki Hirai, criticizing the first three episodes, agreed with Catwell's criticisms. In spite of this, Hirai described the story's perceived themes of friendship and gender dysphoria as "relatable and even wholesome," comparing it to Hitori Bocchi no Marumaru Seikatsu, and said that those who were not dissuaded by the "problematic" aspects could appreciate the series.[42]

In reviewing the anime for Anime News Network's weekly reviews, Kim Morrissy was more positive, saying "Onimai is the best anime of the season."[40] Morrissy strongly praised the narrative, humor, art, and animation production, particularly the work of series director Shingo Fujii, who previously worked on Precure.[40][43] They also characterized the story as broadly relatable for its perceived theme of growing to accept significant personal changes. While Morrissy acknowledged the fanservice and story elements criticized by other reviewers, in particular Mihari's forcible feminizing of Mahiro[40] and some "nonsensical" jokes,[44] they ultimately said that those who were accepting of those elements would find a "genuinely rewarding show."[40]

One Japanese-language reviewer, writing for 4gamer.net, echoed positive sentiments regarding its music and artstyle. The author recommended it to "people who like to watch anime in the middle of the night with an empty head."[45]

Analysis

The series has been noted for its transgender themes by reviewers, which have received a mixed response.[41][40][42][38] Cy Catwell opined in their review for Anime Feminist that the series was not a positive transgender story, and found that it made them uncomfortable as a trans masculine agender individual.[41] By contrast, Kim Morrissy, in his review for Anime News Network, praised the series as appealing to transgender viewers for the "element of wish fulfillment" in depicting a simple and immediate gender transition.[40] Regarding these themes, Morrissy also praised the role of Momiji, who – being a tomboy – they said "represents the multifarious dimensions of gender identity that can exist even within cisgender people"[43] and also generally praised the series for "subverting gender expectations."[46] Caitlin Moore, despite her overall negative impressions, felt similarly, saying the series would resonate with trans viewers despite the "sheen of lasciviousness."[38]

In an analysis of the series, Japanese writer Honeshabri determined that Mahiro would likely not be able to legally change their gender marker under current Japanese law. Honeshabri concluded that the Japanese law on gender recognition is flawed and hoped the Supreme Court would amend it.[47]

Popularity

In February 2023, fans of Onimai sent numerous gifts to the staff of Studio Bind, the production studio of the anime, which series director Shingo Fujii posted photos of in a tweet voicing thanks for the support.[48]

Notes

  1. ↑ "Oshimai" written phonetically to have a double meaning of お終い "my older brother is over" and お姉妹 "my older brother is a sister"
  2. ↑ As a girl, Mahiro's name is written as 緒山 まひろ, which has the same reading but is written differently.

References

  1. ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
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  26. ↑ 26.0 26.1 26.2 26.3 Lua error in package.lua at line 80: module 'strict' not found.
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  28. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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  38. ↑ 38.0 38.1 38.2 38.3 38.4 38.5 38.6 38.7 Lua error in package.lua at line 80: module 'strict' not found.
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  40. ↑ 40.0 40.1 40.2 40.3 40.4 40.5 40.6 40.7 Lua error in package.lua at line 80: module 'strict' not found.
  41. ↑ 41.0 41.1 41.2 41.3 Lua error in package.lua at line 80: module 'strict' not found.
  42. ↑ 42.0 42.1 42.2 Lua error in package.lua at line 80: module 'strict' not found.
  43. ↑ 43.0 43.1 Lua error in package.lua at line 80: module 'strict' not found.
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External links

Template:Studio Bind

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