A Sister's All You Need
妹さえいればいい。
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.
Ratings
Based on audience scoresWhere to stream A Sister's All You Need
Streaming now in the United States on Crunchyroll.
Rent or buy in the United States on Apple TV Store.
Trailer
A Sister's All You Need. - Official Trailer
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Frequently asked questions about A Sister's All You Need
Where can I watch A Sister's All You Need in the United States?
A Sister's All You Need is available to stream on Crunchyroll in the United States, and to rent or buy on Apple TV Store. Streaming availability is provided by JustWatch and can change over time.
Can I watch A Sister's All You Need for free?
Not free in the United States right now. A Sister's All You Need needs a subscription to Crunchyroll, or you can rent or buy it on Apple TV Store.
What are the ratings for A Sister's All You Need?
A Sister's All You Need scores 7.6 on The Movie Database and 6.3 on IMDb.
Who stars in A Sister's All You Need?
A Sister's All You Need stars Satoshi Hino, Hisako Kanemoto, Akane Fujita, Kohsuke Toriumi, and Manami Numakura.
How many seasons of A Sister's All You Need are there?
A Sister's All You Need has 1 season and 12 episodes, and is ended.
How long does it take to watch all of A Sister's All You Need?
All 12 episodes of A Sister's All You Need add up to about 4 hours 48 minutes at roughly 24 minutes each. At two hours a night that is about 2 evenings; at four hours a day it takes about 1 days.
What network is A Sister's All You Need on?
A Sister's All You Need airs on Tokyo MX and KBS Kyoto, and is produced by SILVER LINK..
What language is A Sister's All You Need in?
A Sister's All You Need is in Japanese, and its original title is 妹さえいればいい。.
Ratings and streaming availability are aggregated from third-party sources; metadata from The Movie Database (TMDB), streaming data from JustWatch. This product uses the TMDB API but is not endorsed or certified by TMDB. Streaming availability checked September 2026.