Isekai One Turn Kill Neesan: Ane Douhan no Isekai Seikatsu Hajimemashita

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Japanese: 異世界ワンターンキル姉さん～姉同伴の異世界生活はじめました～

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Information

Type: TV

Episodes: 12

Status: Finished Airing

Aired: Apr 8, 2023 to Jun 24, 2023

Premiered: Spring 2023

Broadcast: Saturdays at 22:30 (JST)

Producers: KlockWorx, Nikkatsu, BS Fuji, Tokyo MX, FUTURE LEAP

Licensors: None found, add some

Studios: Gekkou

Source: Manga

Genres: Comedy, Fantasy

Theme: Isekai

Demographic: Seinen

Duration: 23 min. per ep.

Rating: PG-13 - Teens 13 or older

Statistics

Score: 6.34¹ (scored by 36,757 users)

¹ indicates a weighted score.

Ranked: #7967²

² based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.

Popularity: #2095

Members: 98,480

Favorites: 444

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6.34

Ranked #7967Popularity #2095Members 98,480

Episodes: /12

Synopsis

While saving a child from harm, otaku Asahi Ikusaba is transported to another world and believes he has reincarnated with cheat skills similar to those of the characters from his favorite games and novels. Unfortunately, reality strikes when an encounter with a powerful monster shows that he is still nothing more than an average person.

In this moment of extreme danger, Asahi instinctively calls out to his overly doting sister, Maya, who appears out of nowhere, possessing the overpowered abilities he thought he had. Maya is ecstatic to see her brother again and resolves to use her newfound powers to protect Asahi no matter what.

Together, the close-knit siblings attempt to find a way back home while enjoying their new lives. However, it soon becomes clear that their arrival in this world may have had a purpose. With the Demon King's overwhelmingly powerful army approaching, no one but Maya seems to be able to stand in its way.

[Written by MAL Rewrite]

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Episode Videos

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Adaptation:

Isekai One Turn Kill Neesan: Ane Douhan no Isekai Seikatsu Hajimemashita

More characters

Characters & Voice Actors

Kilmaria

Main

Koshimizu, Ami
Japanese

Ikusaba, Maya

Main

Shiraishi, Haruka
Japanese

Ikusaba, Asahi

Main

Sakakihara, Yuuki
Japanese

Peaceful, Sophie

Supporting

Waki, Azumi
Japanese

Brigandine, Gloria

Supporting

Tokui, Sora
Japanese

Kuon

Supporting

Kohara, Konomi
Japanese

Tanya

Supporting

Tsuchiya, Rio
Japanese

Huan

Supporting

Suzuki, Reiko
Japanese

Lombert

Supporting

Ootomari, Takaki
Japanese

Anne

Supporting

Takao, Kanon
Japanese

More staff

Staff

Ozawa, Fumihiro

Producer

Oomori, Shinji

Producer

Hirata, Minoru

Producer, Planning

Konishi, Yuuki

Producer

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Opening Theme

	"華麗ワンターン" by TrySail (eps 2-7)
	"Follow You!" by TrySail (eps 8-)

Edit

Ending Theme

	"華麗ワンターン" by TrySail (eps 1)
	"無窮プラトニック" by VALIS (eps 2-)

Reviews

Jun 25, 2023

OrkusReOrca

Recommended

It's better than you thought

At first I also expect the most generic isekai plot with the over protective sister type from the name and sypnosis. But while yea most of it is still the generic plot, it's better and more wholesome than expected

First of all the isekai gimmick of course is unique, but unlike most other unique gimmick, this one does live up the gimmick and follow through and make the gimmick actually useful to the story.

Now for the sister part, it's still a bit weird and play in to the "weird" stuff, but there are still some moment that's very wholesome too.

The quality thought ...

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Jun 23, 2023

CodeBlazeFate

Mixed Feelings

Well-written

Anyone ever watch a show specifically for one character? Everyone has their own reason for watching something, no matter how odd or specific, no matter how the thing they decide to watch looks like it’ll turn out. Sometimes they just like the vibe and wanna experience that all the way. Sometimes they just really like a song or one of their favorite artists is doing the OP or ED. Sometimes clips have convinced you that a show has baller fights, or in the case of this show, clips have demonstrated one character who sells the anime alone.

It’s not the sister. In fact, let’s get this ... out of the way now, the titular one-hit-kill sister, Maya, is gonna be a make or break aspect of the show, as other aspects and faults will often be supported or hindered by the experience of watching a brocon constantly smother and even sexually harass her little brother. That’s certainly a fetish some people are down for, but perhaps the main reason this show is even worse-received than its contemporaries this season (many of which seem significantly more poorly-produced and include fucking Smartphone S2) is the fact that Maya is insufferable most of the time. They can range from kind of annoying to disturbing and even manipulative, though of course that means we’re supposed to find it gut-busting (or even nut-busting).

There are some decent bonding moments and snippets of conflict between her and actual MC Asahi. The weakling’s desire for independence and his need to grow stronger both for his own sense of self-improvement and his own sake given the dangerous world is combined with how adventurers caught falsifying their rank are dealt with, is an alright source of character development. Asahi’s a bumbling little squirt annoyed at how unlike basically every other isekai MC this season alone, his base stats are equivalent to how original world’s self without any crazy OP powers, therefore making it harder to do anything, including evading Maya’s advances until episode 4.

Still, slowly but surely, he trains (which we should see a bit more of), he acquires powers, and improves his evasion and techniques to the point of being able to make up for his weaknesses. He may not recognize it, perhaps many viewers don’t either, but Maya does, which helps elevate both characters up a little while solidifying perhaps more character development than some isekai consumers (and haters) are used to from one of these. She herself has some surprising moments of actually sincerely looking out for him in the shadows, even if it’s always preceded by or followed up by a gaudy sexual or romantic advance in the same episode.

Otherwise, this show has a comfortable enough vibe. Tensions are minimal but they get played upon to at least a perfunctory degree, and there is some decent comedy to be had with Asahi’s bullshitting or some of the character dynamics. The latter aspect is mainly found in the borderline sitcom arch nemesis who carries the show on its back, Kilmaria. She’s a blood knight demon, among the demon lord’s top guys, and after being saved by Asahi despite tryna fight him on the grounds of his reputation, she quickly develops her own dynamics with the main duo, evolving them over time. She goes from casually hanging out with and mildly looking down on Asahi as a sort of little brother, to someone who cares about him more and more with each passing adventure. She goes from seeing Maya as this insufferable and hypocritical rival to one she eventually starts getting along with and making fun of. Perhaps her best showing is in episode 5 where, in a human disguise, she starts being excited by all the little things in a human society like horses, bridges, and the weak masses before rubbing Asahi the wrong way about how weak and inconvenient being a human must be.

Of course, the show never hard commits to any conflicts it dredges up, save for one example that introduces one of Asahi’s eventual harem members he builds up over time, but the inklings are welcome enough and some of them get just enough exploration without making the show actively need to take itself seriously. The other characters in this show are…fine? Sophie the healer is kind of annoying as an overzealous Asahi-worshiper, Tanya’s the quest-giver and total fangirl who does get an ok story with her little brother who also looks up to Asahi. Gloria’s a fun meathead girl who eventually swaps out her suspicions towards Asahi for a dorkaholic romantic interest in him that her servant, Kuon, attempts to wingman. She’s probably the second or third most fun girl in the show. Some of the other side characters like the eventually washed-up adventurer Siegfriend are amusing as well, especially when the source of his party’s humiliating downfall unknowingly greets him again.

The cast is honestly on the upper half of isekai rosters in all honesty, and you bet that Kilmaria makes at least some of them bounce off her. Even without her elevating everything for most of the show, eventually enough of them come into their own to help make the cast surprisingly decent on the whole. They’re actually kinda funny, with nearly every episode having at least one funny moment and a few bits actually being kinda hilarious. It’s also oddly nice how much they back each other up, defending each other’s character in the face of whoever’s goading, intimidating, or otherwise confronting them. It adds a sense of camaraderie to everyone that can’t quite be found in a lot of this show’s contemporaries, even Slime, and that series actively has a community being built from the ground up. The ways everyone comes together in the finale are rather fun and rewarding to see as a result of everything.

Another aspect of the show that’s better than it realistically should be is the visuals. For the most part, it looks pretty subpar. It’s Gekkou’s first release as a studio, and a directorial debut by Hiroaki Takagi, and it could be worse on either front. Sometimes it absolutely is. The show’s production is so jittery that while 60-95% of the time it looks about what you’d expect from your average seasonal, sometimes it’ll either dip into astonishingly terrible territory or bust out a couple of surprisingly decent cuts. There are plenty of animation errors even outside of the freakish drops in quality, like with the dragon in Kilmaria’s Chinese dress disappearing a lot. The action rarely gets past just ok, even when we get an oddly fine burst of sakuga. The volleyball scene in the beach episode (episode 11) is an atrocious minute of slideshows and the fanservice can range from perfunctory to downright crudely drawn, so just be glad this isn’t classified as an ecchi because as mediocre it is as an action show, it would fare even worse as an ecchi title.

The outlines tend to not stick out, but sometimes the show thickens them as part of a gag of for more climactic close-ups. The show also does play around with aspect ratios every now and then, like letterboxing in the first half of episode 1 and 4:3 in the flashback sequence that kicks off episode 7. The characters also deform into charmingly drawn chibis for a bunch of silly gags and spats, usually Maya and Kilmaria who also carry the brunt of the relatively amusing facial expressions. They do try to spice things up occasionally, and that is welcome. It honestly feels like there’s enough potential in the visuals that if it were made to simmer for another 3 months, the end result could have wound up being legitimately above average for a seasonal, let alone an isekai. Unfortunately, that’s not the case.

A more consistently mediocre aspect of the series is its music. The ED, Mukyuu Platonic” by VALIS is an oddly decent electropop song with hints of melancholy in it, which makes it better than both OPs. The music is also fairly forgettable outside of Maya’s theme and Kilmaria’s theme which get spammed basically every episode. There is an occasionally decent track once in a while like when Kilmaria tries to get Asahi to abandon Maya and become a demon, and there’s an alright insert in episode 11 that gives the siblings some time alone to discuss how far they’ve come in a mostly pleasant scene. However, that doesn’t really elevate the music much, as it’s still incredibly whatever across the board.

One Turn Kill Neesan can be a pleasant, goofy ride that revels in its own absurdity while boasting more character development and fun dynamics than one might expect. It’s also got brocon shit that will either elevate the experience for you if you’re into it, or make the show a trudge to sit through for the good bits if you aren’t. It’s very annoying and kind of embarrassing, but it is kinda cute and fun, especially whenever characters are being dorks or having each other’s back. Still, there’s enough here to elevate the show well above the likes of Smartphone, Master of Ragnarok, Arifureta, or probably half of the isekai you’re watching this season (because Kamikatsu looks like it was edited by YouTubers [derogatory] and animated by an outsourced studio in another country). In terms of an isekai you can just sit back and watch, you can do a lot worse. Name another isekai that has Kilmaria in it.

Also, this is a non-Sunrise show, non-mecha seasonal at that, which features a relatively acceptable mecha transformation sequence...in 2D. Wasted as it is on a last-minute outing and one-shot, that fact alone is borderline commendable for one of these, especially considering it’s an isekai.

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Jun 23, 2023

KANLen09

Not Recommended

I don't understand. Is the Isekai sub-genre of actually letting your family members be OP, a thing now? Because if it is, it's a shitty sub-genre that is already on the journey to its downfall.

If you do not understand what I mean, do you remember one-time novelist Dachima Inaka's Tsuujou Kougeki ga Zentai Kougeki de 2-kai Kougeki no Okaasan wa Suki desu ka? a.k.a Do You Love Your Mom and Her Two-Hit Multi-Target Attacks? Yes, it's the MILF-sekai novel-turned-anime happening all over again with yet another one-time novelist of Konoe's Isekai One Turn Kill Nee-san a.k.a My One-Hit Kill Sister. Haven't we had enough of ... all of these wild stories that just contribute nothing but waste filler to the anime industry nowadays? Apparently, only Japan thinks so.

In the TL;DR format, if you've seen or read MILF-sekai, copy everything from the show and paste it here. Literally, the exact same Isekai traits are seen here, so you can expect trash to be here as well. And indeed, trash is what we got, but in the most unenjoyable and cringe-worthy fashion possible. Everything from idolising what is supposed to be the main character, passed onto the family member of choice (in this case, it's MC Asahi Ikusaba's older sister Maya) and puts the main character in the background, hiding his presence but not to the point of being off kilter. As expected, the title should give the plot out right away: Maya IS that One-Hit Kill Sister, the likes of One Punch Man's Saitama, but don't expect any kind of unique character out of her, other than her obsession with Asahi for being the voluptuous, big-breasted older sister who's always looking for sibling love. And sure, like MILF-sekai, we get characters who fill the harem gap just right, and in this show, they exist in the form of the harem party of Super Asahi Legion: the older sister Maya herself, the guild receptionist Tanya, one of the Demon King's generals, Kilmaria, the princess Gloria Brigadine (and her able maid assistant Kuon), and the klutz of a mage, Sophie Peaceful. All the girls are there to rain in on the siblings' parade of their conquest to live a fruitful life in the fantasy world, though that's not to the appreciation of Maya, who feels a sense of jealousy amongst the other girls, vying for Asahi's attention as well.

Every once in a while, there is a sign of newcomers in the anime industry, and it always livens up the atmosphere to see new studios popping up for attention. Founded in 2017, studio Gekkou is not just the usual anime production studio but is one that is involved in sound production as well. Though this show is the studio's first-ever work (other than the upcoming Temple a.k.a TenPuru: No One Can Live on Loneliness coming next season), the majority of the undertaking seems decent at first sight, though it has the makings of a 3rd-rate studio. It's just uncanny that over the years, smaller studios are formed like this to kerb the long drought of the anime industry's manpower shortage problems, yet this measure does nothing to tell of any kind of solution that will endanger the industry even more.

The music, is rather nice or bland, depending on your taste. TrySail covers 2 OP songs in the show, though the latter song, which plays from Episode 8 onwards, I feel is the better song. And speaking of songs, you might not have heard of the girl group VALIS before, that's because they are a virtual artist circus group (though in the Vtuber range, but not exactly). And their breakout debut song...is really good, I'm very surprised that it's this well done, with the accompanying visuals that tell another story from Maya's perspective that's not shown in the anime.

But overall, Isekai One Turn Kill Neesan a.k.a My One-Hit Kill Sister suffered the same problems as MILF-sekai, because of authors who think that they can develop a new thing out of the old, and this is the kind of trash that we get nowadays, setting a trend that otherwise is unneeded. It's uninteresting even from a narrative standpoint, no matter how you see it, and take my word that if you find these kinds of shows interesting, more power to you. I'm not one of those people who likes to waste time on trash, and if MILF-sekai tells me one thing, this trend of the family's siblings or parents being OP than the main MC, needs to die. NOW.

Boring is an understatement. The animation is there, but it doesn't save the show.

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Poll: Isekai One Turn Kill Neesan: Ane Douhan no Isekai Seikatsu Hajimemashita Episode 1 Discussion ( 1 2 3 ) Stark700 - Apr 7, 2023	121 replies	by Jay_Woo »» Apr 14, 5:34 AM
I gave this show a 9/10! I've done my part! LordKirkis - Feb 7	32 replies	by Treyv0n »» Mar 25, 4:55 PM
OP versus ED Disparity absolutelynormal - Apr 29, 2023	15 replies	by StarCry »» Mar 7, 8:40 PM
Love the sense of humor in this show! LordKirkis - Jun 16, 2023	9 replies	by Gator »» Feb 20, 12:31 PM
Poll: Isekai One Turn Kill Neesan: Ane Douhan no Isekai Seikatsu Hajimemashita Episode 12 Discussion ( 1 2 ) Stark700 - Jun 23, 2023	68 replies	by Gator »» Feb 20, 12:12 PM

Isekai One Turn Kill Neesan: Ane Douhan no Isekai Seikatsu Hajimemashita

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Kilmaria

Ikusaba, Maya

Ikusaba, Asahi

Peaceful, Sophie

Brigandine, Gloria

Kuon

Tanya

Huan

Lombert

Anne

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Isekai One Turn Kill Neesan: Ane Douhan no Isekai Seikatsu Hajimemashita

Alternative Titles

Information

Statistics

Available At

Resources

Streaming Platforms

Synopsis

Background

Episode Videos

Visit MALxJapan MALxJapan -More than just anime-

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Characters & Voice Actors

Staff

Opening Theme

Ending Theme

Reviews

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