Shinonome Siblings

Akiena is the family ship between Akito Shinonome and Ena Shinonome from the Project SEKAI fandom.

Canon
Akito and Ena are siblings with a one-year difference, with Ena being the older sister. At the beginning of the story, it is shown that although deep down they care for each other, the siblings do not get along as well as the other sibling pairs (Tsukasaki and Shizushiho), with Ena constantly lashing out at Akito, using him as an errand boy, and the latter calling her annoying among other things. This is also because Ena is mad at Akito for refusing to use his artistic talents, something she is envious of. At one point Akito mentions that when Ena gets mad, she at times throws things at Akito and even scratches him. Touya also mentions that he remembers how Akito's skin was filled with scratches when they met for the first time.

Outside of the area conversations, the two are shown interacting in Ena's 1* first side story.

SEKAI Happy New Year!
While the two don't interact with each other in the Event Story, they are shown together in Ena's card story. Ena exits her room, checking out which sweets they received as gifts she should bring to Niigo's New Year's countdown party at the Empty SEKAI. She enters the living room, only to find Akito munching on then. She immediately asks what he's doing with the gifts, leading to Akito revealing their mother told him to divide them between the family. When Akito tells her where the madeleines he is eating came from, Ena retorts saying she surely didn't tell Akito to eat them all, but Akito just comments that they taste way too good to not be eaten. He then in turn counters Ena's words, asking her if she didn't leave her room just to snatch some of the sweets too. Ena doesn't deny it, and then mentions she'll brew black tea. Akito asks her to make some tea for him too, saying it's no effort to put in more water, and Ena tells him she'll do it if brings the gifts to her room.

Insatiable Pale Color
In Chapter 1, Ena happens to run into Akito while going to get some snacks, then asking him to get snacks for her, however he declines telling her to get it herself and leaves. In Chapter 2, Akito greets Ena as she walks into the living room guessing she pulled an all-nighter, however Ena just tells him to shut up and asks why he isn’t rushing to school and he answers her question. In Chapter 4, Akito walks into her room calling her loud, and quickly asking what’s wrong with her room, while Ena responds telling him to shut up. However, he then notices what she’s throwing out and questions her, but she says it has nothing to do with him. Despite this, he still asks and she tells him the same thing while kicking him out of her room. And lastly in the final chapter, Akito greets her once she enters the living room and Ena apologizes for lashing out on him, however he says it didn’t bother him. She then says she decided to continue drawing, and Akito tells her to do her best.

Secret Distance
Similarly to SEKAI Happy New Year!, Akito and Ena only interact in Ena's card story.

My Footprints, Your Destination
In Chapter 2, the Niigo members run into VIVID BAD SQUAD after leaving the diner.

Fanon
In the Eastern fandom, Akiena is quite popular and the most popular out of the three sibling pairs, and it is often treated as a het ship. It currently has over 600 works on Pixiv. Meanwhile in the Western fandom, its romantic following is rather minor and most people have voiced their distate and disgust for the ship and Akiena shippers as well because of its incestuous nature, although non-romantically people enjoy seeing their development as well as stories showing how they support each other in their own ways. Both are shown to bicker a lot, sometimes even more than in canon. After the release of both Akito's White Day 2022 costume and Ena's costume for the "My Footprints, Your Destination" event as well as salamander design for Salamander, there has been a lot of fanart where Akito is a knight hunting Ena or them being in a fantasy setting together.

Fandom
FAN FICTION

ART

TWITTER
 * Shinonome Siblings Bot Twitter account

Trivia

 * Their ship is referred to with the "🎨🥞" emojis.
 * Their Kizuna Ranks include: "Shinonome Siblings", "Intimate(?) Siblings", and "Not Gonna Lose".
 * In multiple area conversations as well as one of the 1-komas, it is shown that Ena often drags Akito along with her while going shopping and making him carry her bags.
 * In an area conversation, the two are at the music store where Ena is trying to find an album which she saw quickly in a commercial based on its cover while Akito grumbles but helps her. In another, Kohane runs into Akito at the shopping mall and tells her to stay quiet so he doesn't alert Ena and let her know where he is.
 * They have a cover of DECO*27's song "Salamander", which was specfically created for the Nissin Cup Ramen collaboration with Project SEKAI.
 * They like and dislike the same foods (cheese cake and carrots). Mizuki also points this out in Ena's introduction video, causing her to get annoyed.
 * When not using Ena's name, Akito refers to her with the term "Aneki" (姉貴), which is most commonly translated as "Sis".