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A Sister's All You Need (2017)

2017 • 1 season • Drama • TV-MA
On September 24, 2026
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All seasons

A Sister's All You Need — Season 1

12 episodes · Oct 8, 2017

Adapted from the popular Japanese light novel series “Imouto Sae Ireba Ii,” this anime season explores a poignant and often humorous story of family, connection, and longing. Directed by Shin Oonuma and brought to life by Silver Link, the series centers around a young man navigating complex relationships within his household. As he grapples with everyday challenges and personal desires, the bonds with his younger sister and other family members are tested and redefined. The season’s emotional journey is beautifully underscored by a selection of evocative musical themes, including ChouCho's opening track "Ashita no Kimi Sae Ireba Ii," and a rotating roster of closing songs performed by Aira Yuuki, Manami Numakura, and Akane Fujita – ranging from piano versions to vibrant vocal performances.

1. I Only Need a Little Brother Who Can Cook, a Beautiful Naked Girl, and Friends I Can Relate to
Oct 8, 2017 · 24m · 5.1

Itsuki Hashima was a celebrated young novelist, yet he harbored a peculiar preoccupation with younger sisters, a recurring motif in his stories that now presented a creative impasse. One afternoon, his younger step-brother Chihiro, along wi…

2. If Only a Miracle Would Happen
Oct 15, 2017 · 24m · 4.6

Nayuta and Miyako entered to find Itsuki before the bathroom mirror, attempting to embody the persona of a younger sister for his latest manuscript. Itsuki held a profound significance for Nayuta, while Miyako harbored secret affections for…

3. As Long As It's For Research
Oct 22, 2017 · 24m · 4.6

The biting cold proved too much for Itsuki, Nayuta, and Miyako, prompting a southward journey to Okinawa. The following day, they ventured to a secluded island, where Itsuki planned to conduct research. Nayuta, in a fit of abandon, decided …

4. As Long As You're Working.
Oct 29, 2017 · 24m · 6.7

For Valentine's Day, Nayuta, Miyako, and Haruto convened in Itsuki’s room, where Haruto once more attempted to demonstrate the depth of their friendship. Just then, Toki arrived bearing a collection of chocolates sent by admirers. A few day…

5. All You Need Is to Write Novels.
Nov 6, 2017 · 24m · 6.7

Itsuki was fast approaching the deadline for volume five, and fled from his editor, Toki, only to be quickly intercepted. Yet, a fortunate encounter with Setsuna allowed him to escape. They sought refuge in a hot spring, a place Setsuna hop…

6. Having Your Media Developments Go Well Is All You Need.
Nov 13, 2017 · 24m · 6.7

Itsuki was scheduled to meet with Kaiko Mikuniyama, the manga artist adapting “Mahou Academy.” Her composed demeanor unsettled him, though he soon learned she shared his fondness for younger sisters. The group gathered for a small celebrati…

7. Adventure Is All You Need.
Nov 19, 2017 · 24m · 4.2

Following the disappointing reception to his anime, Itsuki arranged for a tabletop role-playing game session with Haruto, Nayuta, Miyako, and Chihiro, hoping to lift his spirits. Itsuki typically favors playing female characters, but Chihir…

8. All You Need Is Love and Friendship.
Nov 26, 2017 · 24m · 4.0

Following Haruto's confession of his feelings for Miyako, Itsuki pledged his assistance. Almost simultaneously, Nayuta, who viewed Miyako as a cherished older sister, mentioned her desire for a birthday celebration. Itsuki and Nayuta strugg…

9. Nudity and Underwear Are All You Need.
Dec 3, 2017 · 24m · 4.0

Toki delivered the manuscript for the Mahou Academy manga to Itsuki. Itsuki had anticipated Kaiko's artwork with eager anticipation, drawn by the quality of her illustrations, but a complication arose. Unable to reconcile herself to the iss…

10. A Lack of Problems Is All You Need.
Dec 10, 2017 · 24m · 7.0

Chihiro began a part-time position at Ashley's office. She meticulously cleaned the entire space, and afterward, took a bath, during which Ashley discovered Chihiro’s secret. Meanwhile, Itsuki journeyed to the zoo with Nayuta, seeking inspi…

11. Becoming the Protagonist Is All You Need.
Dec 17, 2017 · 24m · 7.0

Itsuki asked Miyako to deliver something to the publisher, and in her haste, she encountered Nayuta’s editor. Miyako informed her that she intended to visit Nayuta herself, to personally ensure the manuscript was completed. The editor expre…

12. A Sister's All You Need?
Dec 24, 2017 · 24m · 7.0

Curled up at the kotatsu, Itsuki drifts off to sleep and is soon lost in a dream. The vision takes him back to his middle school years, a time shadowed by the recent loss of his mother. He remembers a burgeoning affection for a particular g…