# Imouto sae Ireba Ii.
*Also known as: A Sister's All You Need. / 妹さえいればいい。*

## Facts
- Format: TV
- Status: concluded
- Year: 2017
- Season: FALL

## Renewal Score
**Imouto sae Ireba Ii.** has a **53% renewal probability** on Courcast (confidence: 99%) as of 2026-06-04.

## Synopsis
The story follows the everyday life of Itsuki, a novelist and "modern day Pygmalion" who works day in and day out to create the ultimate younger sister. He's surrounded by various other characters: a beautiful genius writer who loves him, his big-sisterly classmate from college, a fellow male writer, a sadistic tax accountant, and his editor. They're all looked after by Itsuki's perfect younger step-brother, Chihiro, who has a serious secret.
(Source: Anime News Network)
Note: The first episode 

## About Courcast
Courcast forecasts anime renewal probability using daily signals from streaming platforms, fan communities, and industry sources. Each CourScore (0–100) reflects fandom momentum, streaming performance, source material runway, and franchise history.

- Full details: https://courcast.com/title/imouto-sae-ireba-ii-fall-2017
- API: https://courcast.com/api/public/titles/imouto-sae-ireba-ii-fall-2017
- About Courcast: https://courcast.com/about

*Last updated: 2026-06-04*