A Sister's All You Need (2017)

Animation · Comedy · Romance

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.

IMDb rating: 6.3 (497 votes)
Seasons: 1
Streaming (US): Crunchyroll
Language: JA
Type: TV series

Browse all Rollercoaster seasons in the explorer → Open in Rising Shows app → View on IMDb

Ratings refreshed Jul 3, 2026 · 1 season indexed

Cast

Seasons

Season 1 (2017)

6.94 avg 12 episodes 6.9 → 6.8 23 min avg

Rollercoaster

Season 1 episodes — IMDb ratings
#	Title	Rating	Votes
1	I Only Need a Little Brother Who Can Cook, a Beautiful Naked Girl, and Friends I Can Relate To	6.9	35
2	If Only a Miracle Would Happen	7.2	31
3	As Long as It's Research	6.9	28
4	As Long as You're Working	7.5	29
5	All You Need is to Write Novels	6.6	26
6	Having Your Media Developments Go Well is All You Need	7.0	25
7	Adventure is All You Need	6.0	25
8	All You Need is Love and Friendship	6.5	23
9	Nudity and Underwear are All You Need	7.3	27
10	A Lack of Problems is All You Need	7.0	26
11	Becoming the Protagonist is All You Need	7.6	30
12	A Sister's All You Need?	6.8	38

A Sister's All You Need (2017)

Cast

Seasons

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