Series synopsis
A Sister's All You Need, also known as 妹さえいればいい。 is a Japanese comedy animation television series that premiered on Tokyo MX on October 8, 2017. It ended on December 24, 2017. It stars Satoshi Hino, Hisako Kanemoto, Akane Fujita and Kohsuke Toriumi.
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 ...
Premise
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.
Cast and characters
Leading cast
- Satoshi Hino as Haruto Fuwa
- Hisako Kanemoto as Nayuta Kani
- Akane Fujita as Kaiko Mikuniyama
- Kohsuke Toriumi as Kenjirou Toki
- Manami Numakura as Ashley Oono
- Ai Kakuma as Miyako Shirakawa
- Chinatsu Akasaki as Kirara Yamagata
- Yusuke Kobayashi as Itsuki Hashima
Supporting cast
- Tsubasa Yonaga as Setsuna Ena
- Nozomi Yamamoto as Chihiro Hashima
- Junko Minagawa as Mitahora Mother
- Kaori Mizuhashi as Haruto's younger sister
Episodes
This series spans 2 seasons with 20 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 0 | 8 | September 10, 2017 | March 23, 2018 |
| Season 1 | 12 | October 8, 2017 | December 24, 2017 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Chihiro's All You Need Itsuki is frustrated after his manuscript gets rejected by his editor. He hangs out at home with Chihiro (his younger “brother”), Miyako, Nayuta, and Haruto. Light banter, comedic rejection & friendship moments. |
September 10, 2017 |
| 2 |
Nayuta's All You Need Nayuta and Miyako reflect on how they met Itsuki and how their friendship developed. Some cute or comedic character build‑up. |
October 9, 2017 |
| 3 |
Miyako's All You Need Itsuki travels for inspiration with Nayuta and Miyako, then is dragged along by some other friends (like illustrator Setsuna) to places like Okinawa, Hokkaido. Small adventure vibes. |
October 23, 2017 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
I Only Need a Little Brother Who Can Cook, a Beautiful Naked Girl, and Friends I Can Relate to Itsuki Hashima is a popular, young novelist. However, he is obsessed with little sisters and his works seem to always include little sisters, so there’s some difficulty coming up with a new series. One day, his younger step-brother Chihiro and his colleagues, Hayato Fuwa, Nayuta Kani, and fellow college student, Miyako Shirakawa show up at his apartment. They enjoy dinner, drinks, and a game. That night, Nayuta makes advances towards Itsuki, but... |
October 8, 2017 |
| 2 |
If Only a Miracle Would Happen Nayuta and Miyako walk in on Itsuki, who was naked in front of the bathroom mirror, trying to act out the little sister character in his new volume. Itsuki is everything to Nayuta, and Miyako secretly has some feelings for Itsuki, but Nayuta also cherishes Miyako because she showed her compassion in her time of need. Nayuta invites Miyako to the hotel she’s staying at and immediately gets naked. She then asks Miyako to also get naked for some kind of research for her novel... |
October 15, 2017 |
| 3 |
As Long As It's For Research Itsuki, Nayuta, and Miyako have a hard time dealing with the cold and head down to Okinawa. The next day, they visit a remote island so Itsuki can do some research and Nayuta decides to flail around naked in the water. Miyako is awed by what she's seeing and eventually jumps into the water naked, as well. Two days later, Itsuki is invited by his illustrator to go to Hokkaido, where they try various local cuisines. However, Itsuki finds out that Setsuna had been ignoring a deadline... |
October 22, 2017 |
Production
Release
| Original network/platform | Tokyo MX |
|---|---|
| First aired | October 8, 2017 |
| Last aired | December 24, 2017 |
| Runtime | 24 minutes |
| Status | ended |
| Schedule | Sunday at 22:30:00 |