

A Sister's All You Need
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.
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Trailer
A Sister's All You Need. - Official Trailer
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Cast
Seasons
Every day is full of fun. But something is missing. "My life would be amazing if only I had a little sister. Why don’t I have a little sister...?" These are the musings of little sister-lover and novelist Itsuki Hashima, who only writes works featuring little sisters. Around him gather a number of unique people: genius author/pervert Nayuta, female college student Miyako, illustrator Puriketsu, and the brutish tax accountant Ashley. Each of them hold their own worries, but live their peaceful daily lives while writing novels, playing video games, drinking alcohol, and filing their tax returns.

1.I Only Need a Little Brother Who Can Cook, a Beautiful Naked Girl, and Friends I Can Relate to
5.108-10-201724mItsuki 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 w...

2.If Only a Miracle Would Happen
4.615-10-201724mNayuta 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,...

3.As Long As It's For Research
4.622-10-201724mItsuki, 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 decid...

4.As Long As You're Working.
6.729-10-201724mNayuta, Miyako and Haruto gather at Itsuki’s room for Valentine’s Day, and Haruto tries to show off his friendship with Itsuki again. Toki then shows up with the chocolates that fa...

5.All You Need Is to Write Novels.
6.706-11-201724mItsuki is nearing his final deadline for volume 5 and flees from his editor, Toki, however he is immediately caught. However, Itsuki manages to escape when he runs into Setsuna and...

6.Having Your Media Developments Go Well Is All You Need.
6.713-11-201724mItsuki has a meeting with Kaiko Mikuniyama, the manga artist who will be doing the manga version of “Mahou Academy.” She looks very refined, which makes Itsuki nervous, but apparen...

7.Adventure Is All You Need.
4.219-11-201724mIn order to cheer Haruto up after his anime was such a flop, Itsuki gets him as well as Nayuta, Miyako and Chihiro together so they can play a TRPG. Itsuki usually plays girls in g...

8.All You Need Is Love and Friendship.
4.026-11-201724mAfter Haruto tells him how he feels about Miyako, Itsuki promises to help him out. Around the same time, Nayuta, who sees Miyako as an older sister, tells him that she wants to hav...

9.Nudity and Underwear Are All You Need.
4.003-12-201724mToki brings Itsuki the manuscript for the Mahou Academy manga. Itsuki was looking forward to what Kaiko had drawn because of her art quality, but there was a problem. Itsuki is una...

10.A Lack of Problems Is All You Need.
7.010-12-201724mChihiro starts working part time at Ashley’s office. Chihiro cleans Ashley’s whole office and then goes to take a bath and Ashley finds out Chihiro’s “secret.” Meanwhile, Itsuki he...

11.Becoming the Protagonist Is All You Need.
7.017-12-201724mItsuki asks Miyako to take something to the publisher’s for him and she runs into Nayuta’s editor. Miyako tells her that she will go see Nayuta and get her to finish the manuscript...

12.A Sister's All You Need?
7.024-12-201724mItsuki falls asleep at the kotatsu and has a dream. He dreams about his darker middle school days. His mother had just died and he falls in love with a certain girl, but... Back in...
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