Hayaprez

Hayaprez is the het ship between Ai Hayasaka and Miyuki Shirogane from the Kaguya-sama: Love Is War fandom.

Canon
Throughout most of the series, Hayasaka helps her mistress, Kaguya Shinomiya, to get her crush, Miyuki Shirogane, to confess to her. Early in the series, Shirogane has no idea that Hayasaka works as Kaguya's maid.

When Kaguya gets sick and the Student Council President visits her, Hayasaka uses an alias of Hayasaca A. Smithee and fakes a foreign accent in order to hide her true identity from Shirogane. She then tests his will by reminding him that Kaguya is sick and thus won't remember what happened, as well as saying that the walls in her house are sound-proof; but reminds him not to do anything weird.

After Ai once notes no progress in Kaguya and Miyuki's relationship, Shinomiya asks her to attempt to seduce Shirogane to prove her point that he only has his eyes for her. To do so, Hayasaka uses her identity as Hayasaca A. Smithee to "accidentally" meet with Shirogane. After he recognizes her as Kaguya's maid, the two spend some time together. During that time, Hayasaka uses several psychological tricks to make the Presiddent interested in her, such as showing interest in his hobbies, asking him for advice, relating to him on being a hard-working student, pretending to fall asleep next to him, and offering to be his part-time girlfriend. Nonetheless, all her methods fail and Shirogane does indeed remain loyal to Shinomiya and rejects Hayasaca, much to her embarrassement.

Soon after, being mad for the embarrassement and being involved in something she didn't want to take part in, when the President wants to talk with Shonimiya in private, to get her help in the election campaign, Hayasaka, in her gal persona, announces it loudly in front of the whole class, creating a peer pressure scenario for Miyuki and Kaguya.

During the Mixer arc, Hayasaka once more attempts to seduce Miyuki under her Hayasaca disguise after Kaguya had told her to go to the mixer party that the President was attending, to make sure other girls stay away from him. After she meets with Shirogane and the rejection is revealed, Miyuki's friends leave the two of them alone. They spend the time together, with Hayasaca singing karaoke and the two talking about how one can only be loved if they put on a disguise. When another guy approaches and flirts with her, Shirogane takes her away to a private room in the karaoke club. After suspecting Hayasaka may have succeeded in seducing Miyuki this time, Kaguya decides to bust them together. After hearing suggestive lines from inside the room, Shinomiya enters, only to find out that Hayasaka's been tired from Shirogane's horrible karaoke singing.

There Hayasaka asks Miyuki to exchange the telephone numbers. They always talk on line. They talk about books, movies, everything. Kei says that Miyuki stops the study to text with her. Kaguya complains about the fact that he never do that with her.

Shirogane dedicates a rap to her and says that she has to be her true self and starts to say what she feels. Hayasaka for the first time says to Kaguya that she is tired of her job, that she wants freedom, male friends and a love story, and live her life. Miyuki congrats to her and beats her fist. Hayasaka blushes. Kaguya asks Hayasaka if she likes prez, and she says that it all starts by friendship.

She's pretty jealous about the relationship between Kaguya and him. She's also very worried when he was in the ospital.

At school trip Shirogane confronts Hayasaka about her true identity. He descovers her in the lift. She admits to all of her lies and her true connection to the Shinomiya family. On the next day, Hayasaka meets up with Shirogane's friend group, and once they're left alone, tells him about the missions she was given. When Kaguya's brother's men start chasing Hayasaka, Shirogane helps her escape, all while giving her a lecture about the importance of having friends in your life.

They escape with the scooter and both blushed. Then Kaguya's brother, Unyo, separates them. hey escape on the scooter and both bushed. Then Kaguya's brother, Unyo, separates them.

With his girlfriend's permission, Hayasaka gave Miyuki chocolate on Valentine's Day as thanks for helping her during her confrontation with Kaguya's brother. In another chapter, the two are hanging out and have a friendly baseball competition with Yu Ishigami and Maki Shijo after school. She cheers for him while playing baseball while Maki and ishigami friendly tease him.

In chapter 237, Miyuki and Hayasaka talks in the stuco and he descovers he doesn't see well and that he needs glasses. Hayasaka tries to put him the contacts and he teases him by putting himself on him and approaching his face to his saying that many people have fetish to lick their eyeballs, he asks him if he wants to try. Miyuki blushes a lot but refuses and Hayasaka says she was joking.

In chapter 241 Unyo asks Miyuki where Hayasaka is, but he says that he would never tell him it, to protect her. In chapter 242, with the war between Shijo and Shinomiya, Miyuki is in danger because Oko Shinomiya could kidnap him to blackmail Kaguya. So Hayasaka becomes his bodyguard to keep him safe by teaming up with Unyo. Unyo says that Hayasaka did that because Miyuki is "pretty important to her" with a mischievous smile. Hayasaka blushes a lot and says that Shinomiya really likes to dig deep into certain matters, implying that probably she feels something for him. Hayasaka moves to Miyuki's house to protect him, she's really excited while Miyuki is worried is worried about how to explain that to his family. Hayasaka says that Miyuki could tell them that she's his new girlfriend but he refuses. In chapter 243 Hayasaka moves to Miyuki's house, they're alone at home and discuss about how to explain that to Miyuki's father and Kei. Hayasaka cosplay

on Miyuki’s bed. When she cosplay a maid, Miyuki blushes and he covers his eyes screaming, "I can’t do it." Hayasaka says that Miyuki likes to dominate the partner. Then Kei and Miyuki's father arrives and the latter says that Hayasaka's mother already explained all to him. Hayasaka then puts cat ears and Miyuki blushes and screams: "You're invincible. "

So Hayasaka lives at Miyuki's house for a while. Ishigami says that they're always together, even at school.

In 249, Hayasaka thinks that Miyuki wants to give up and cries but he says that he would never give up and asks her to join him in a war.

In 267, Miyuki has to move to Stanford and says goodbye to Hayasaka at the airport. Hayasaka cries and says to him that she'll chat him lately.

Fanon
The ship sailed as a result of the chapters in which Hayasaka was told to seduce Shirogane. Those who prefer rarepairs instantly took a liking to this ship. It was further fueled with several chapters of the Official Doujin focusing on their relationship in an alternate universe. Its main rival ships are Kaguprez and Fujisaka.

It gained some more popularity with the anime adapting one chapter in which Hayasaka tries to seduce Shirogane. It's also still among the most popular ships for both characters included.

They're usually shipped because they're very similar. Miyuki is her first friend and with him she starts to be herself. They've also a lot of moments and she seems to feel something for him sometimes but it has never been explicitly confirmed.

The fan fictions and fan arts that do exist usually focus on the chapters in which Hayasaka seduces President or on their relationship from one of Official Doujin's alternate universes.

Fandom
WIKI
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Trivia

 * There is a fan-made doujin of the original manga written and illustrated by a different author. In a few chapters which focused on a "kindergarten AU," Hayasaka and Miyuki ended up getting engaged in an alternate universe where they both worked as kindergarten teachers while the rest of the cast were kids.