Imouto sae Ireba Ii.

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]

Kani, Nayuta Main

Kanemoto, Hisako Japanese

Hashima, Itsuki Main

Kobayashi, Yuusuke Japanese

Shirakawa, Miyako Main

Kakuma, Ai Japanese

Hashima, Chihiro Main

Yamamoto, Nozomi Japanese

Fuwa, Haruto Main

Hino, Satoshi Japanese

Oono, Ashley Supporting

Numakura, Manami Japanese

Ena, Setsuna Supporting

Yonaga, Tsubasa Japanese

Mikuniyama, Kaiko Supporting

Fujita, Akane Japanese

Toki, Kenjirou Supporting

Toriumi, Kousuke Japanese

Mitahora, Ayane Supporting

Takamori, Natsumi Japanese

Cook, Justin Producer

Herek, Samantha Assistant Producer

Oonuma, Shin Director

Tamamura, Jin Director, Episode Director, Storyboard

Reviews

Nov 8, 2024

GrilledMackerel

Recommended

This is my favorite anime of all time(as of writing this review), so I am super biased in this review and most people probably won't like it as much as me, so take the review with a grain of salt.

A sister's all you need is a well written story with interesting characters, that also touches on serious stuff if you look past the surface.

If you have a problem with fan service then you shouldn't be looking at an anime with the ecchi tag.

I wouldn't recommend this to someone who doesn't like dirty humor, because there is quite a bit of it.

If you ... have a normal amount of a problem with incest than this show is fine, but if you have a severe problem with it than you probably shouldn't watch this.

If none of the above apply to you then I would recommend this show. The first few minutes are not the actual story so don't drop this because of what happens in the very beginning.

I give this a 10/10 because I liked it from a few minutes into the first episode, and for some unexplainable reason it is my favorite.

If you liked the anime read the light novels

Reviewer’s Rating: 10

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Mar 8, 2025

air_dan

Mixed Feelings

Overall, a fun and humorous show that talks about the creative and narrative process. The little sister trope is a bit overplayed for me, but I think it lands fine. I liked the characters but that’s the issue I didn’t love anything. Honestly, the character I felt for the most was the editor because is job is very demanding. I just think the show had more potential instead of a group of friends all liking each other. Each one has a in depth backstory, but we barely scratch the surface for them. When we get character development it is focused as a reveal to the ... audience but instead it should be for the characters. I have not read the light novels or the manga, and I could see where this could excel in a second season. Yet, it had the room and time to do it earlier and in fails in that. If you want a laugh and a bunch of nudity, then this is the show for you. I just wish the plot and characters had more depth and time dedicated to explore that.

Reviewer’s Rating: 6

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Jun 19, 2025

Neonblade1

Not Recommended

5/10- Pretty mediocre.

This show is the definition of "meh". I haven't something this boring in a while. I really should have dropped it around Episodes 4 or 5.

The characters are very poorly written. They all have barely any personality. Characters do stuff that would get you in jail. The worst part is that it's not even slightly funny to be considered a joke. The little sister character undergoes assault but it's played for cheap comedy.

There is some potential here in regards to our main character- Itsuki's relationship with his father. His father remarried rather quickly after his mother's death, which has been a point ... of contention between them. He stops talking to his dad after that and moves out. They have a pretty broken relationship but we don't really see any progress on it. It's barely even mentioned. This could be an interesting venue to explore Itsuki's character but we spend most of the time seeing our characters either play board games or harass each other or make unfunny jokes.

The backdrop of the story is the manga industry and what it would take each our characters to become successful manga authors but its not the focus. It's part of the background, but the story spends very little time on it.

I almost forgot to mention the title is kinda misleading. There really isn't enough little sister in this show, so consider yourself warned.

Unfunny, mediocre and mediocre at times. All in all, this is very skippable.

TLDR- 5/10. Mid, skip it.

Reviewer’s Rating: 5

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