A Sister`s All You Need.
Original Title：妹さえいればいい.
Languages:
- English: A Sister`s All You Need.
- French: Imôto sae ireba ii
- Russian: Была бы младшая сестра, а остальное — ерунда
- Chinese: 如果有妹妹就好了.
- Japanese: 妹さえいればいい.
A Sister's All You Need (Japanese: 妹さえいればいい。, Imōto Sae Ireba Ii.) is a Japanese light novel series written by Yomi Hirasaka and illustrated by Kantoku. It has been published by Shogakukan under their Gagaga Bunko imprint since March 2015, with a total of 14 volumes released. The series revolves around Itsuki Hashima, a light novel author with a particular obsession for stories about little sisters, and the eccentric people who surround him, including a beautiful and genius writer who is in love with him, a sisterly college classmate, a fellow male author, a sadistic tax accountant, and his editor. The story follows their daily lives and the underlying conflicts of their dreams and goals. The series incorporates romantic comedy elements with common light novel themes and concepts. Two manga adaptations and a 12-episode anime television series adaptation by Silver Link, which aired from October to December 2017, have been produced. The anime was streamed by Crunchyroll, with an English dub produced by Funimation and has been released worldwide.