Imouto sae Ireba Ii.

A Sister's All You Need

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Alternative Titles

Synonyms: It'd be Good if Only Little Sister Was Here
Japanese: 妹さえいればいい。
English: A Sister's All You Need
German: A Sister's All You Need
Spanish: A Sister's All You Need.
French: Imôto sae ireba ii
More titles


Type: TV
Episodes: 12
Status: Finished Airing
Aired: Oct 8, 2017 to Dec 24, 2017
Premiered: Fall 2017
Broadcast: Sundays at 22:30 (JST)
Licensors: Funimation
Source: Light novel
Genres: ComedyComedy, RomanceRomance, EcchiEcchi
Theme: Adult CastAdult Cast
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.291 (scored by 144009144,009 users)
1 indicates a weighted score.
Ranked: #25882
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #673
Members: 308,544
Favorites: 1,705

External Links

Streaming Platforms

Ranked #2588Popularity #673Members 308,544
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Episodes: /12
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Itsuki Hashima is a light novelist obsessed with little sisters, strictly focusing on them when he writes his stories. Despite his personality, he is surrounded by a tight circle of friends: Nayuta Kani, a genius yet perverted novelist who is in love with him; Haruto Fuwa, a fellow male author whose work has seen considerable success; Miyako Shirakawa, a good friend that he met in college; and Chihiro, his perfect younger step-brother who takes care of the housework and cooking.

Together, they play strange games, go on spontaneous journeys, crack silly jokes, and celebrate each other's successes. However, each individual must also deal with their own issues, whether it is struggling to meet a deadline or coming to terms with traumatic events buried in their past.

[Written by MAL Rewrite]


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Episode Videos

Related Anime

Characters & Voice Actors


Oonuma, Shin
Tamamura, Jin
Director, Episode Director, Storyboard
Tsuchiya, Masanori
Sound Director
Takamura, Yuuta
Episode Director


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Ashita no Kimi sae Ireba Ii. (明日の君さえいればいい。)" by ChouCho

Ending Theme

1: "Donna Hoshizora yori mo, Donna Omoide yori mo (どんな星空よりも、どんな思い出よりも)" by Aira Yuuki (eps 1-3, 5-8, 10-12)
2: "Dairokkan no Mistress (第六感のミストレス)" by Manami Numakura (eps 4)
3: "Innocent Lovely (イノセント・ラブリー)" by Akane Fujita (eps 9)

Dec 24, 2017
The award for the most misleading title goes to…!
Probably not A Sister’s All You Need (AKA: Imouto Sae Ireba Ii) but it’s a pretty damn misleading name.

It’s definitely caused a bit of confusion for people deciding whether to watch it or avoid it like the plague, so before I start the review I feel like it’s necessary to say what this show is and what it isn’t.

This show isn’t...
-A little sister romance.
-A rip off of Eromanga-sensei.
-Ecchi, but there are few over-the-top lengthy fanservice scenes.
-A kids' show, despite how the characters appear.
-The horrifying events that occur in the first 3 minutes. It gets better ...
Dec 24, 2017
This season of anime was one to look forward to, with popular series like Umaru and Gintama gaining new additions to their story. However there were a couple of new additions that have stood out as well (namely Blend S and Mahoutsukai no Yome). That being said Imouto sae ireba is my pick of this season. The reason simply being because its good at its genre. Compared to Blend S forgetting about the settings of their MC (I can only assume it has something to do with wanting the audience to actually like her) and Mahoutsukai no yome merely touching upon dependence rather than love, ...
Dec 24, 2017
Y'know, the realization of writing reviews on this site for four years comes with some vague existentialism of wondering if anyone actually reads the things that I write, or if I've actually improved cause these things are just sort of self-proofread without my outside opinion. Bah, I'm getting ahead of myself. Let's just get into this thing.


First off, ignore the first five minutes. As a writer, Hashima Itsuki is peculiar. After getting an earful from his editor for the umpteenth time, he goes off on his usual schpeel about the greatness that is the 'imouto', before being promptly told to take ...

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Recent Forum Discussion

Poll: Imouto sae Ireba Ii. Episode 12 Discussion ( 1 2 3 4 )
Stark700 - Dec 24, 2017
158 replies by patchworx »»
Sep 18, 9:36 AM
Poll: Imouto sae Ireba Ii. Episode 11 Discussion ( 1 2 3 )
Stark700 - Dec 17, 2017
100 replies by patchworx »»
Sep 18, 1:49 AM
Poll: Imouto sae Ireba Ii. Episode 10 Discussion ( 1 2 )
Stark700 - Dec 10, 2017
67 replies by patchworx »»
Sep 18, 12:47 AM
Where to continue where the anime left off in the novel?
gazuyaL - Sep 17
5 replies by gazuyaL »»
Sep 17, 5:18 PM
Poll: Imouto sae Ireba Ii. Episode 9 Discussion ( 1 2 )
Stark700 - Dec 3, 2017
81 replies by patchworx »»
Sep 17, 10:32 AM