I've been watching Haikyuu! nonstop for the past month. I love it so much. I'm currently saving up money to buy all of the mangas available as well. I've gone Haikyuu crazy, maybe it's because I'm a volleyballer myself, or whatever, but I can't get enough. So, I'm writing A/B/O oneshots of all my faves. There will be warnings if there is any M-rated content in a chapter. There will be no regular schedule of updating, I'll just update when I'm inspired.

And, I'll be taking recommendations as well! So PM me with your recs.

HAIKYUU!

(DaiSuga [Gotta start with Mom and Dad, am I right?])

Sugawara Koushi chuckled as he watched two of his packmates, Hinata and Kageyama, bicker lovingly as they walked back to their classes. Hinata had begged Suga to practice passing in the courtyard between the boys' gym and the school while Kageyama practiced tossing with Tsukkishima and Yamaguchi. The two taller first years had left before them, mostly because Kagayama and Tsukkishima couldn't go ten minutes without arguing. Kageyama only stuck around because his mate was still adamant on practicing.

"Shoyo, you're going to get hurt," Kageyama scolded gently as he linked his hands with the older beta. Hinata huffed and they began bickering again.

"See you later, boys," Suga patted their shoulders giving them both a bright smile.

"Oh! Bye, Suga-San," They waved at him as he turned down the third years' hall where he spotted his own mate and pack leader waiting for him by his locker.

"Daichi," Suga smiled as they pressed close together, scenting each other.

"I figured Hinata roped you into so extra practice," Daichi grinned.

"Yeah, he's determined to have improved before practice," Suga rolled his eyes as they strolled into their classroom.

"About after practice tonight, I was thinking you'd come over and watch a movie," Daichi suggested as they took their seats, the classroom hummed with the sound of varying conversations about the room.

"Yeah, what's showing tonight at the Sawamura Theater?" Suga smiled, leaning his cheek against his hand. He listened to the movies that Diachi suggested, but really he was just watching Daichi's mouth move. "They all sound good, Daichi. We'll just have to see what we want to watch when we get there." Daichi hummed in agreement before turning to face the teacher who was calling for the next lesson to begin.

...

"Bye, Asahi, Noya!" Daichi and Suga waved as they walked hand-in-hand to Daichi's house. Daichi slid his fingers between Suga's as they strolled leisurely towards Daichi's house.

"Have you decided on what movie you'd like to watch tonight?" he hummed thoughtfully. Daichi's dark brown eyes met Suga's as he squeezed his mate's gentle hands.

"Hmm, not sure," Suga smiled up at Daichi. What were the options, again? Suga thought to himself. Who cares.

"Koushi..." Suga's heart fluttered excitedly when his name rumbled from Daichi.

"Yes?" Daichi's thumb caressed the back of his hand as Daichi unlocked the front door. They quickly kicked off their shoes.

"Do you want to watch a movie? Or do you have something else in mind?" Daichi grinned knowingly at Suga before he snuck a brief kiss from Suga.

"I-I, uh, yeah!" Suga squeaked, a little flustered at the bold statement, feeling heat spread across his cheeks. "A movie, yeah, heh!"

"Great!" Daichi grinned as he took Suga's bag from him and hung it beside his. "I know just what we'll watch." Oh. Suga felt a little embarrassed at where his mind had gone briefly. He and Daichi agreed that they would wait until after they had settled down with an official pack before they took the final step in bonding. But, that didn't stop them from fooling around every now and then. They were just hormonal teens, after all.

By the time Suga and Daichi were settled on the couch with several snacks and a blanket, Suga's mind was running seriously amuck. It didn't help that Daichi was casually toying with the waistband of his sweatpants. His fingers leaving trails of flames along Suga's hip, distracting Suga from whatever cheesy horror film Daichi had chosen. Suga was desperately trying to reign in his hormones to keep the pheromone levels from getting out of hand less he and Daichi do something they could regret later.

Suga gasped softly as Daichi pulled him flush against the volleyball captain's side, his warm lips skimming against Suga's temple before slowly dragging down to the corner of his mouth. Suga turned his head to meet Daichi, but Daichi had already turned back to the film, a small smirk curled on his lips.

He's teasing me. Suga stared slack-jawed at his alpha. A sudden flash of irritation ran down his spine. Two can play at this!

Suga leaned forward and placed the bowl of chips on the coffee table in front of them before shoving Daichi onto the couch cushion, straddling his hips.

"Daichiiii..." Suga smiled gently as he rested his forehead against Daichi's. "Why are you doing this to me?"

"Hm, I don't know what you're talking 'bout, Koushiiii," Daichi smiled innocently as his hand came to rest on Suga's waist, teasingly his thumbs slipped under his shirt. A shiver ran down Suga's spine as keened lowly. Daichi pressed soft kisses against Suga's face, his closed eyelids, and finally his lips. "You're so cute, Koushi."

"Dai..." Suga whimpered as he fisted Daichi's shirt in his hands. He was practically purring at the affection Daichi was showering him with.

"Such a beautiful omega," Daichi rumbled low in Suga's ear, praising him. "So good to me."

"..Alpha..." Suga was panting, blush spreading across his cheeks, turning his ears red. Daichi sat up and wrapped his arms around Suga's waist. Suga's legs curled around Daichi as he pressed his face into the scent glands of his alpha. The calming pheromones Daichi produced soothed Suga's lust, and his inner omega purred at the affection.

"Scent me, Koushi," Daichi whispered in Suga's ear, pressing his lips to the delicate shell. Dazed, Suga began to release his own pheromones.

"Dai, Dai, Dai!" Suga chanted as he pressed as closely as he could to his partner. The alpha's cool finger ran soothingly up and down Suga's sides, under his shirt. By the time they had both pulled out of the pheromone-induced haze, they had scent-marked each other heavily. Suga giggled as he nosed under Daichi's chin.

"Guess we haven't been as attentive to each other as I thought," Daichi smiled down at the omega setter. Suga hummed as they rested their foreheads together.

"It has been pretty hectic with practice and college entrance exams," Suga sighed, "Thank you, Dai. I really needed that."

"Hm..." Daichi kissed Suga sweetly, "It's late, let's go to bed, Kou."

...

A sweet little start to this One-shot collection.

Most of these one-shots will be connected, kinda sorta, not always. But they are in the same universe of A/B/O Dynamics, and down below is the version of AU I'm using.

In my version of A/B/O Dynamics there are Alpha-Alpha, Beta-Alpha/Beta-Omega, Omega-Omega which means that A-A can only impregnate someone with -O, and typically have a larger knot, B-A and B-O are just Betas, but depending on whether they are B-A or B-O determines if the impregnate or become pregnant, however, they have a harder time conceiving and do not have frequent ruts/heats. Omega-Omegas can only become pregnant, even if they are male, while Beta-Omega's can impregnate. Beta-Alphas cannot become pregnant, however.

No one shifts into wolves or other animals, this is just a secondary gender to determine reproductive purpose. 'Pack' dynamics happen because pheromones connect with close emotional ties between people, so often times club members will form what's called a Temp-Pack or Temporary Pack Bond between several adolescences, but because one isn't fully developed until between the ages of 18-20, these bonds aren't completely able to form, but often times 18-20 y/o's who were in clubs together or were close in general tend to form complete pack bonds quickly. In packs, members often call each other 'mate', and people who are romantically involved will call each other partners, polyamorous relationships are common. Partners do not have to be in the same pack, and often times aren't due to the staggering of ages, or locational differences. Packmates will help each other in ruts/heats, this is commonplace, and has to do with evolutionary factors with breeding and such.

Packs can grow and shrink, most packs contain 10-20 people, but can be as large as 30-35 and small as three-five.

Omegas and Beta-Omegas tend to nest when in heat and pregnant but tend to just nest whenever and wherever, so Alpha's just deal because number one rule in life is to never mess with a nest. Omegas are known to become volatile when something happens to a nest, even if they don't have 'pups', especially in heat/pregnant. Alphas become easily agitated when in a rut, which just bumps up libido and is caused when in contact with someone in a heat for a long period of time. Packs tend to sync up in heats and ruts, not Temp-Packs though. This is also due to evolutionary stuff.

If you have any questions about my a/b/o dynamics or have a request for a one-shot, please PM me!