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A Sister's All You Need (2017) poster

TV series

A Sister's All You Need

2017, Japanese, on TOKYO MX & KBS Kyoto.

Itsuki Hashima is a light novelist obsessed with little sisters, strictly focusing on them when he writes his stories. Despite his personality, he's surrounded by a tight circle of friends, including a beautiful genius writer who loves him, a big-sisterly college classmate, a fellow male writer, a sadistic tax accountant, his editor, and Chihiro, his perfect younger step-brother who takes care of the housework and cooking. As the story progresses, the underlying conflicts of dreams and goals surface, as each character attempts to achieve their dreams, in their own way.

ComedyAnimation
Watch TrailerWhere to Watch
Seasons
1
Episodes
12
Episode length
24 min
Status
Ended in 2017

Worth the Hype

Clear your evening for this.

7.5/10 from 69 TMDB viewer ratings.

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Where to watch A Sister's All You Need

A Sister's All You Need isn’t on a subscription OTT platform in India, but you can watch it free online.

Availability in India as of 10 November 2026. Streaming data by JustWatch.

Latest episode

S1 E12: A Sister's All You Need?

Aired 24 December 2017

Seasons 1

Season 1 (2017) poster

Season 1

2017 · 12 episodes · 5.6/10

Specials (2017) poster

Specials

2017 · 8 episodes

Cast & crew

Details

First aired
8 October 2017
Last aired
24 December 2017
Network
TOKYO MX, KBS Kyoto, Sun TV, BS11, AT-X
Original title
妹さえいればいい。
Language
Japanese
Country
Japan
Type
Scripted
Rated
TV-MA
sisterharemromanceslice of lifeincestecchianimebased on light novel

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News & fan talk

Latest newsFan theories on Reddit

What A Sister's All You Need is based on

A Sister's All You Need is based on A Sister's All You Need, a 2015 light novel series by Yomi Hirasaka, published by Gagaga Bunko.

Source details from Wikidata and TMDB.

If you liked A Sister's All You Need

A Sister's All You Need: quick answers

Is A Sister's All You Need worth watching?

Our verdict is Worth the Hype: Clear your evening for this. It scores 7.5/10 from 69 TMDB viewer ratings.

How many seasons of A Sister's All You Need are there?

A Sister's All You Need has 1 season and 12 episodes, about 24 minutes each.

Is A Sister's All You Need finished?

Yes. A Sister's All You Need ended in 2017, so you can watch the whole story.

Which OTT platform is A Sister's All You Need on?

A Sister's All You Need isn’t on a subscription OTT platform in India, but you can watch it free online. (Checked 10 November 2026.)

A Sister's All You Need parents guide: is it suitable for kids?

A Sister's All You Need is rated TV-MA. Check the rating guidance before watching with young children.

What shows are like A Sister's All You Need?

If you liked A Sister's All You Need, try Rent-a-Girlfriend, Ladies versus Butlers!, Angel's 3Piece!.

What is A Sister's All You Need based on?

A Sister's All You Need is based on A Sister's All You Need, a 2015 light novel series by Yomi Hirasaka, published by Gagaga Bunko.

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