Imouto sae Ireba Ii.
English title: A Sister's All You Need
Japanese title: 妹さえいればいい。
Alternative titles: It'd be Good if Only Little Sister Was Here
Type: TV
Source: Light novel
Episodes: 12
Status: Finished Airing
Aired: Oct 8, 2017 to Dec 24, 2017
Broadcast: Sundays at 22:30 (JST)
Duration: 23 min per ep
Rating: PG-13 - Teens 13 or older
Studios: SILVER LINK.
Producers: Bandai Visual, Lantis, Shochiku, Bushiroad, Hakuhodo DY Music & Pictures, BS11, Shogakukan
Licensors: Funimation
Genres: Comedy, Romance, Ecchi
Themes: Adult Cast, Otaku Culture, Workplace

Itsuki Hashima is a light novelist obsessed with little sisters, strictly focusing on them when he writes his stories. Despite his personality, he is surrounded by a tight circle of friends: Nayuta Kani, a genius yet perverted novelist who is in love with him; Haruto Fuwa, a fellow male author whose work has seen considerable success; Miyako Shirakawa, a good friend that he met in college; and Chihiro, his perfect younger step-brother who takes care of the housework and cooking.
 
Together, they play strange games, go on spontaneous journeys, crack silly jokes, and celebrate each other's successes. However, each individual must also deal with their own issues, whether it is struggling to meet a deadline or coming to terms with traumatic events buried in their past.

[Written by MAL Rewrite]