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
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.311 (scored by 138373138,373 users)
1 indicates a weighted score.
Ranked: #24162
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #653
Members: 295,427
Favorites: 1,667

External Links

Streaming Platforms

Ranked #2416Popularity #653Members 295,427
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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
Tsuchiya, Masaki
Sound Director
Itabisashi, Michiru
Episode Director
Nihei, Yuuichi


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
RebelPanda (All reviews)
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 read more
Dec 24, 2017
Yorozuya4eva (All reviews)
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, read more
Dec 24, 2017
PyraXadon (All reviews)
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 read more
Dec 24, 2017
RPWPA (All reviews)
When this anime started airing, I had high expectations because it had lots of potential and seemingly good characters but sadly all that went downhill mid season and it felt like an annoying chore having to watch the episodes weekly and even if that wasn't enough, it even ended in the most abruptly and weird way possible.


At the beginning of the anime we had the MC who always tries his hardest at writing and yet somehow he doesn't make it big, we also knew that the MC had to deal with people who were much better and more creative than him so he always read more

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