Haikyuu One-Shots and Head Cannons

Iwaoi

"Hey Iwaizumi, how's your girlfriend?" Mattsun asked him during practice.
"She's going good." Iwaizumi answered. "I really love her."
It was this topic that would break Oikawa's heart into a million pieces. He was in love with Iwaizumi, who was his best friend.
"That's great man." Mattsun said.
Makki on the other hand was just looking at Oikawa, he saw through the fake smile and saw the pain in his eyes.
Suddenly the gym doors burst open and someone tackles Oikawa into a hug. "KAWABABE!!!"
"ATSUBABE!!"
Low and behold it was Oikawa's best bad bitch and fellow pretty setter Atsumu.
"Kawababe how are you?"
"So much better now your here. Bitch I missed you!"

Iwaizumi cleared his throat and the two boys on the floor looked up at him.
"Who are you?" He asked the fake blond.
"I'm Miya Atsumu, from Inarazaki. Top setter in the country. And who are you?"
"Iwaizumi Hajime. How do you know Oikawa?"
"Hahaha that's a funny story of how me and Kawababe met."
"Kawababe? Are you two dating?" Makki asked. This caused the two boys on the floor to get up and laugh.
"If you don't know we won't tell you." Oikawa answered. Before he and Atsumu walked out of the gym. "Iwa-Chan your in-charge me and Atsubabe will meet you and the other third years later!" He yelled on his way out. 

With Atsumu and Oikawa.
"Was that him Kawababe?"
"Yeah, yeah it was. How's your crush on Sakusa going?"
"Pretty good. We're hanging out more often, we've even cuddled a few times. He is so cute yet oblivious."
"Well at least yours doesn't have a girlfriend."
"We'll make him jealous when we see him tonight. Let's go get really cute outfits and I can ask Omi Omi's opinion. And he can meet you via face time."
"Sounds like a plan Atsubabe."

Back in the gym.
"What the Fuck just happened?" Mattsun asked.
"I think Oikawa has a boyfriend." Makki answered
"He would have told me if he did." Iwaizumi seemed mad and confused. "Right?"
"I don't know Iwa, you've been kind of busy with your girlfriend. Makes sense if he didn't tell you." Makki commented. "Don't worry about it. We'll find out tonight. Not like you would pay too much attention with your girlfriend there anyways."

Back again with Atsumu and Oikawa.
"Hey Omi Omi! This is Oikawa aka Kawababe. Kawababe this is my Omi Omi." Atsumu introduced on face time.
"Hey Sakusa. I've heard a lot about you."
"Same here." Sakusa said.
"So Omi Omi. Tonight we are gonna make his crush jealous a little and we might post some pics but don't think anything about it. We're just friends. Also how do you like my outfit?" Atsumu spun around at the end showing Sakusa his dress.

Atsumu's dress:

"You look amazing Atsu. Very beautiful." Sakusa answered blushing.
"Thanks Omi Omi! Check Kawababe's dress as well."
"Okay Atsu I will."
"Kawababe come here, give a spin for the camera."
"Okay, okay." Oikawa answered entering the frame before giving a little spin.

Oikawa's dress:

"You also look very nice Oikawa. Your dresses suit you both very well. Be careful tonight though."
"We will Omi Omi. We have to go now bye."
"Bye Atsu."

"He so 100% likes you."
"You think?"
"Yes Atsubabe, let's go we have to meet everyone."

When they arrived at the party they were all meeting at all eyes were on them as soon as they walked in the door. Their arms were linked and they were laughing. They saw the Makki, Mattsun, Iwaizumi and Iwaizumi's girlfriend and made their way there.
"Hey guys. I didn't get your names earlier." Atsumu said politely.
"Oh I'm Makki."
"I'm his boyfriend Mattsun."
"You haven't added Makki to the chat!" Atsumu randomly blurted to Oikawa.
"Shit your right babe. Tonight I'll add you to a special chat Makki." Oikawa said winking.
"Hi, I'm Iwaizumi's girlfriend. Who are you?" She asked Atsumu.
"I didn't ask about you." Atsumu snapped.
"Oi that's my girlfriend no need to be rude."
"Blah blah blah. I don't care. Kawababe let's dance." Atsumu dragged Oikawa to dance.
"Ugh whatever. He looks ugly anyways I wouldn't want to befriend that ugly hag. I mean I was trying to be polite cause he seemed like a friend of yours." Iwaizumi's girlfriend said. This made the three with her look at her a funny way. They hadn't seen this side of her.

Throughout the night Iwaizumi's eyes almost never left Oikawa, he was watching his best friend laugh and dance with someone else, he felt angry but didn't know why. The next song that came on was Best Friend by Doja Cat. Atsumu and Oikawa got up on a table and screamed the lyrics while dancing with each other. They also recorded and took photos together.
"Hey babe you good?" Iwaizumi's gf asked. "Babe? BABE!"
"Oh uh what?"
"What's wrong with you? You've been distracted since Sluttykawa and his friend walked in."
As she said that Oikawa and Atsumu were behind her and heard what she had called Oikawa.
"Hey! You don't ever get to call Kawababe that."
"Or what? You'll punch a girl. Guess what? You look ugly and fat. Especially in that god awful dress. Do us a favour and get yourself an eating disorder." She snapped. However, there was a guest appearance.
"Excuse you germ. How about you say that to a mirror and not my Atsu."
"Omi Omi!" Atsumu jumped and wrapped his legs around Sakusa's waist.
"Surprise. It was Oikawa's idea."
"Thank you Kawababe! Love you."
"Love you too Atsubabe. Hello Sakusa."
"Hello Oikawa. Thanks for convincing me to come out here."
"Anything to see that golden smile of his. Am I right?"
"That you are. Now you..irrelevant hoe. I will fucking kill you if you ever say something like that to Atsu again. And trust me I would make it rather painless compared to Osmau, Suna and Kita."
"Whatever. They're both whores."
"Bitch just because your dating Iwa-Chan does not mean you have the rights to call me or my best friend such names." Oikawa snapped. "And you Iwaizumi. Your meant to be my best friend but as soon as you get a girlfriend you leave me. You spend all your time with her or talking about her without seeing how much I fucking love you. And now you let her say that shit about me? You have always stood up for me. Your not the Iwa-Chan I fell in love with." Oikawa said.
"You love me?" Iwaizumi asked.
"No fucking shit."
"Tooru, I'm sorry." Iwaizumi sounded sincere and sad.
"I always knew you never would and never did feel the same. It's okay but I need time."

Time skip a few years later.

Oikawa and Iwaizumi lost contact, Sakusa and Atsumu were married.

Oikawa was on the Argentina team and was going up against Japan.
"Iwaizumi, your the Japan team trainer?" Oikawa asked from behind Iwaizumi.
"Yes I am. May I ask who you are?" He turned around and saw Oikawa's face.
"Argentina's setter, Oikawa Tooru."
"I've missed you." Iwaizumi said before hugging Oikawa. "I'm so so sorry for what happened all those years ago. I love you I really do. It took loosing you to know how I felt I'm sorry."
"Oh Iwaizumi, there you are Tooru." Ushijima walked towards the too. "How are you love?"
"I'm fine Wakatoshi, just wanted to see an old friend."
"That's right you and Iwaizumi were on the same high school team right?"
"Yes we were. Iwaizumi I'm Wakatoshi'd fiancé."

Iwaizumi's face paled and his eyes went wide. "I thought you were with Tendou?"
"Unfortunately we ended our relationship when we left high school although we are still good friends. He is actually my best man. You should also come to the wedding."
"Yeah Iwaizumi, I'll send you an invite. Oh it's time to warm up. I'm gonna crush you guys."

Time skip a few months.
Day of the wedding.
"Does anyone object to this union."
"Okay you may now kiss the groom."

Oikawa woke up in a sweat and looked beside him and found Iwaizumi sleeping. Iwa woke up due to the bed shifting when Oikawa sat up.
"Baby what's wrong?"
"I had a horrible dream."
"Want to talk about it?"
"Never again."

𝔸/ℕ 𝕃𝕠𝕝.