Hinomori Sisters

Shizushiho is the family ship between Shizuku Hinomori and Shiho Hinomori from the Project SEKAI fandom.

Canon
Shizuku and Shiho are siblings with a one-year difference. They both attend Miyamasuzaka Girls' Academy, where Shizuku is a second-year student, and Shiho is a first-year student. While Shiho always calls Shizuku "Onee-chan", Shizuku calls Shiho with the nickname "Shii-chan". Shizuku likes to dote on Shiho a lot, due to the little time they were able to spend together since Shizuku was often busy with work. Shiho has claimed she doesn't like her since she always "bothers her," but she tends to get embarrassed whenever Shizuku clings to or shows affection to her in public. Shizuku also wants to help Shiho reconcile with her childhood friends.

The Moon Rabbits & Us
While Shizuku is searching for a moon viewing photo, she finds Shiho's baby pictures. Shizuku calls her very cute, and looks at the other pictures, one where they used the rice puffs from the Doll Festival as decorations due to their cute design, and another where they had matching clothes and hairstyles. Shiho then comes in to tell Shizuku dinner's almost ready. Shiho asks if Shizuku plans to show anyone the photos of her, and Shizuku says she wasn't planning to, but after Shiho brought up the “idea”, Shizuku said she could show them to Mafuyu. Shiho tells her not too, and Shizuku continues to call her adorable in the pictures, commenting on sauce stuck to her cheek in one of them. Shiho threatens to not talk to Shizuku anymore if she shows them to anyone, which surprises Shizuku for a second. However, right after, she continues going on about the pictures.

When Shizuku and Shiho were younger, Shizuku calls Shiho amazing, and compliments her sand mountain. Shiho tells Shizuku to put her hand somewhere, moves something away, and then Shizuku comments on how she's able to now see Shiho. Shizuku calls it wonderful, and suggests naming it Mt. Shii after Shiho. Shiho, however, declines of embarrassment, and instead asks to name it after Shizuku. Shizuku, surprisingly, thanks Shiho a ton as the both smile in agreement. Shiho then agreed to show Shizuku more after she asks, and they both continue to do many stuff with the Sand Mountain.

Quotes
"I bought Shii-chan and myself a matching pair of hats to protect us against the sun, but she won't wear hers for some reason..."

- Shizuku's Spring Menu Dialogue

"(Shii-chan's been working so hard every single day... It seemed like she had a lot on her mind until recently, but now she looks like she's having so much fun chasing after her dream like this... I'm sure she'll face some tough challenges moving forward, but I know she won't back down from them... Hehe. That means I need to do my best too...)"

- Shizuku in The Moon Rabbit & Us Chapter 2 - When We Were Little...

Fanon
Shizushiho is enjoyed as a familyship, alongside Tsukasaki and Akiena. Fans appreciate how much Shizuku cares for Shiho. At the same time it is the least popular when compared to the other two siblings pairs. Shizushiho isn't widely appreciated as a femslash ship due their familial relation. Despite this, there are currently 24+ romantic Shizushiho works on AO3 and 61+ gen works. While there is fan fiction of Shizushiho, there isn't much fan art. In fandom works, artists often portray Shizuku being even more affectionate than in canon.

Fandom
FAN FICTION

FAN ART

TWITTER

Trivia

 * Their ship is referred to with the "💧🎸" emojis.
 * Their Kizuna Rank titles are: "Hinomori Sisters", "Intimate Sisters" and "Moon Rabbit".
 * Some of their Cheerful Carnival Team names are "Shii-chan!", "Don't Stick To Me", "Miya Girls' Secretly Famous Sisters" and "Moonlight Night's Sister Rabbits".
 * They have a cover of Kujira's song "Aoiro Enogu", which was specfically created for the Nissin Cup Ramen collaboration with Project SEKAI.
 * On November 5, 2022, Shizuku's seiyuu posted a video of her hugging a Shiho cardboard cutout in the real life Kamiyama High Festival event.