Anime Basics: A Sister’s All You Need.

A Sister’s All You Need.
Imoto Sae Ireba Ii. (JP)
Genre: Slice-of-Life, Comedy
Season: Fall 2017
Premiere Date: October 8, 2017 (JST)


The anime adaptation of the youthful romantic comedy novels written by Yomi Hirasaka—the author of Haganai: I Don’t Have Many Friends—is finally here!


Every day is full of fun. But something is missing.

“My life would be amazing if only I had a little sister. Why don’t I have a little sister…?”

These are the musings of little sister-lover and novelist Itsuki Hashima, who only writes works featuring little sisters. Around him gather a number of unique people: genius author/pervert Nayuta Kani, female college student Miyako Shirakawa, illustrator Puriketsu, and the brutish tax accountant Ashley Ono. Each of them hold their own worries, but live their peaceful daily lives while writing novels, playing video games, drinking alcohol, and filing their tax returns.

Itsuki’s younger brother Chihiro watches over Itsuki and his friends. However, Chihiro has a big secret…

It’s time to start this youthful romantic comedy filled with geniuses, normal people, and weirdos that will make you laugh and touch your heart!


Itsuki Hashima
Voice: Yusuke Kobayashi

A little-sister-lover who strives to create the ultimate little sister not yet seen by man in the world of fiction. He seems like he has lots of confidence, but is actually quite sensitive, and while he seems simple, he’s actually fairly complicated. And, though he appears to be kind of nuts, he’s actually a pretty good and honest guy.

Chihiro Haneshima
Voice: Nozomi Yamamoto

Itsuki’s little brother. He’s extremely skilled at cooking and cleaning, and is always up to the challenge of taking care of his big brother Itsuki who lives alone.

Nayuta Kani
Voice: Hisako Kanemoto

A junior author of Itsuki’s who respects him deeply. She’s a genius author who was able to become a top-level selling author in the industry almost instantly after her debut. All her actions are based 100% on her love for Itsuki.

Miyako Shirakawa
Voice: Ai Kakuma

A classmate of Itsuki’s from college who has continued to be friends with him even after he quit school. A perfect representation of the modern youth who struggles with romance, friendship, and her own dreams.

Haruto Fuwa
Voice: Satoshi Hino

An author who has been writing around the same amount of time as Itsuki. He excels at self-producing his own work, with his self-produced anime is doing quite well. He appears to be an eloquent handsome young man, but he hides a passionate secret in his heart.

Where to Watch

Crunchyroll (sub)
FUNimation (dub)


Official Website
Official Twitter


Original Story: Yomi Hirasaka (Shogakukan”Gagaga Bunko”)
Original Character Design: Kantoku
Director: Shin Onuma
Sub-Director: Jin Tamamura
Series Structure/Script: Yomi Hirasaka
Character Design/Chief Animation Director: Sumie Kinoshita
Main Animator: Shinpei Aoki
Prop Design: Misako Izumi
Background Art Director: Hirofumi Sakagami
Colorist: Asami Hirai
Composite Director: Atsushi Usuda
Editor: Kentaro Tsubone
Design Direction: BALCOLONY.
Sound Director: Masanori Tsuchiya
Music: Tomoki Kikuya
Music Production: Lantis
Opening Theme Song: “Ashita no Kimi sae Ireba Ii.” by ChouCho
Ending Theme Song: “Donna Hoshizora Yori mo, Donna Omoide Yori mo ” by Aira Yuki
Animation Production: SILVER LINK.


Yusuke Kobayashi as Itsuki Hashima
Nozomi Yamamoto as Chihiro Hashima
Hisako Kanemoto as Nayuta Kani
Ai Kakuma as Miyako Shirakawa
Satoshi Hino as Haruto Fuwa
Kosuke Toriumi as Kenjiro Toki
Tsubasa Yonaga as Setsuna Ena
Manami Numakura as Ashley Ono
Akane Fujita as Kaiko Mikuniyama

Ⓒ Yomi Hirasaka, Shogakukan/Imoto sae ireba ii Project

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