Ano Oni Kyoushi ga Boku no Ane ni Naru n desu ka?

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Synonyms: That Demonic Teacher Will Be My Sister?

Japanese: あの鬼教師が僕の姉になるんですか？

Information

Type: Manga

Volumes: 3

Chapters: 23

Status: Finished

Published: Aug 17, 2020 to Jul 15, 2022

Genres: Comedy, Romance, Ecchi

Demographic: Shounen

Serialization: Shounen Magazine Edge

Authors: Hinaki (Art), Nekomata, Nuko (Story)

Statistics

Score: 6.36¹ (scored by 2,977 users)

¹ indicates a weighted score.

Ranked: #19268²

² based on the top manga page. Please note that 'R18+' titles are excluded.

Popularity: #3171

Members: 7,853

Favorites: 33

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6.36

Ranked #19268Popularity #3171Members 7,853

MangaShounen Magazine EdgeHinaki (Art), Nekomata, Nuko (Story)

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Volumes: /3

Chapters: /23

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Synopsis

Ano Oni Kyoushi ga Boku no Ane ni Naru n desu ka? centers on a boy who is initially overjoyed at the news of him having an older sister due to his father remarrying to a woman who has a daughter, until he finds out that his new sister is actually his school's strict PE teacher, Shina. With his father going off to live with his new wife, the boy will live with alone with his new sister. In their new life together, the boy finds out that Shina at work is completely different from Shina at home: clumsy, scared of insects, and kind.

(Source: ANN)

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Shiina, Maki

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Maki, Kazuki

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Reviews

Aug 4, 2022

Suntanned_Duck2

Recommended

Preliminary (Unknown/23 eps)

Spoiler

The manga is about a sports teacher that is now our male protagonist's step sister. At school mean teacher mode, at home happy big sister mode. While a typical premise it has more to it than that.

The art is alright. I don't have anything to say about it.

The enjoyment, characters and story will depend though on if you can tolerate the contents though.

I was intrigued to see what direction they would take this as while the description for the manga (besides none on MAL) seemed typical of a step family situation it does make the relationship between the characters more interesting how far they actually ... take each scene and the sense of normal and if ecchi moments not the typical but them getting used to being siblings and if walking into the bathroom (or respecting privacy) and not freaking out but just getting used to the new family situation or the opposite gender or just because they see them as their sports teacher now as their step sister.

Spoilers/scenes to give an idea of how they handle it:

A focus on a step sister and student age boy getting used to their living situation/bonding at home or when going places is the core of different scenes throughout but you have scenes like as a brief summary of a few chapters to showcase what direction they go of just everyday things or embarassment:

-asking questions about each other (as sensible and silly as you would expect),
-the home happy big sister/demonic sports teacher mode dynamic (mostly at home stuff though or if at school sometimes if preparing for a lesson being the sister),
-going to the shops as siblings/kind of a date sort of thing,
-chilling out gaming at home,
-getting used to them sleeping/doing their laundry,
-cooking and who is bad at it,
-riding on a bike,
-seeing each other in the bathroom/bathing together
-or seeing a character that exercises and not freaking out when they say you can look/touch their body to see their efforts.

Currently up to a camping chapter. So you can tell it has moments of bonding in a few scenes especially this one.

Among other things. I see it as just a getting used to their living situation and even if ecchi not making it the typical but just working it out. While it is the case of step family situations then a couple it is still interesting how they handled it I think. Which I found to be a good way to handle it than ecchi situations just being the usual you can easily remember and it being rather repetitive I found this manga surprising and something enjoyable to read just to see what happens out of curiosity.

It gives me similar vibes to a succubus manga I read not too long ago where it makes it wholesome rather than the 'every time you hear "succubus" you think ecchi right'. What I mean by this is in the succubus one it was that the character was doing their job and showing off their dreams no ecchi at all in it. (Succubus manga referring to https://myanimelist.net/manga/123990/Shachiku_Succubus_no_Hanashi)

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Mar 23, 2021

Gholaax

Recommended

Preliminary (8/23 eps)

Spoiler

This review contains spoilers

Well let's start with That Demonic Teacher Will Be My Sister ?.
Currently the manga has 8 chapters, and tells us the day to day of a young man with a high level of hormones.

Art (8/10): I quite like the art, the drawings are well done and no complaints have been found about this aspect.

Enjoyment (9/10): On the other hand, the comedy touches that they give to the work seem quite good to me.

Characters (7/10): The fact that the younger brother wants to stop thinking badly about his sister which makes him more mature than the sister, who only incites the poor ...

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Feb 2, 2026

ZEKA_Mx

Mixed Feelings

I must say that I have mixed feelings. The first time I read this was two years ago, and at the time I would have given it an 8. I liked the story, although it was also very fast-paced, but now I feel like I have to give it a 6. I don't know exactly why, maybe it's because of the sensei's inconsistency. There are many occasions where the girl gets naked and acts as if nothing is happening, and other times where she blushes at a simple compliment. I know that's what a character like the sensei does since she doesn't have much interaction ...

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Poll: Ano Oni Kyoushi ga Boku no Ane ni Naru n desu ka? Chapter 23 Discussion Jesse-kun - Jul 18, 2022	15 replies	by milimnavaz »» Feb 14, 2024 10:02 AM
Poll: Ano Oni Kyoushi ga Boku no Ane ni Naru n desu ka? Chapter 14 Discussion Jesse-kun - Feb 16, 2022	3 replies	by psyche-K »» Sep 26, 2022 6:34 PM
Poll: Ano Oni Kyoushi ga Boku no Ane ni Naru n desu ka? Chapter 22 Discussion Jesse-kun - Jul 6, 2022	0 replies	by Jesse-kun »» Jul 6, 2022 3:11 PM
Poll: Ano Oni Kyoushi ga Boku no Ane ni Naru n desu ka? Chapter 21 Discussion Jesse-kun - Jul 6, 2022	0 replies	by Jesse-kun »» Jul 6, 2022 2:59 PM
Poll: Ano Oni Kyoushi ga Boku no Ane ni Naru n desu ka? Chapter 20 Discussion Jesse-kun - Jul 6, 2022	0 replies	by Jesse-kun »» Jul 6, 2022 2:50 PM

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