A/N: I love A/B/O dynamics especially giving characters a secondary gender they normally don't have in other fanfics. Also, manga spoilers (CH. 296)

----------------------------------------------------------------------------

It actually didn't make sense for him to be attracted to the alpha. It wasn't like they spoke much, it wasn't like he was close with him like how Izuku, Ochako, Mina and Denki were. It made him jealous and his inner omega whine at the lack of attention but, he couldn't bring himself to be one of those bold omega's that could just saunter up to who they want. That wasn't him. He never had the guts to do that no matter what his omega wanted. He noticed Hitoshi- Shinsou out loud he would never call him his first name unless he was given explicit permission- during the sports festival when he used Ojiro. That was mean and hurt Ojiro's pride however they made up so no more bad blood between them, and then how he got body slammed by Izuku disqualifying him from the whole tournament. Shinsou was not happy about that. Fast forward to when he got moved into the hero course into Class 1-A he made it a point he wasn't there to make friends. He failed miserably. He even managed to be tolerated by Bakugo since he was able to banter back and forth with him. That's when Sero's admiration turned into a crush. He realized he had a crush on him when he was in the common room with his hair down fresh out the shower and, he was watching cat videos with some of the dekusquad. Sero knew he was staring and when he got caught by Shinsou, he froze with red cheeks and almost melted into the floor when he winked with a tiny smirk. That's when Sero knew he was done and fucking smitten for the tall purple-haired classmate.

"Sero, you're alright?" He turned to Kirishima the smiley alpha staring at him with open concern "You're a little red and sweating, is your pre-heat coming up?" He watched as Ejiro took his phone out to check. Some people might find it weird but, all the alpha's made it their duty to figure out when the omega's were going into pre-heat and heats to avoid problems amongst each other and outsiders as well.

"N-no I'm fine. I was just thinking about something." He didn't want to divulge about his crush to Eji right in the open where anyone can hear.

"As long as you're sure." Everyone was in their second years so a couple of people finally got together especially after fighting the League of Villains. That was a catastrophe that took months for Japan to heal and of course the death of Midnight and the change to the top 10 rocked hero society as a whole. A lot happened but, everything was back to normal as much as it can be anyway.

"Yeah, my heat isn't supposed to happen anyway until next week ish I believe so I should be good." Of course, he didn't depend on that because his cycle will do what it wants when it wants. Half the class was in the common room, Sero was curled up on one end of the couch and Mina on the other end. Him and Mina were the only omega's in the bakusquad so they always stayed close to each other. The rest of the omega's in the class included Koda, Tokoyami, Ochako, Tsuyu, Toru and Aoyama. Tokoyami was with Shoji, Toru was with Ojiro and Koda was with Tsuyu. Everyone else was dancing around each other sort of. Including his-self with Shinsou. He wondered if he ate the snacks he left for him.

"Seroooooo-kun." He glanced over at Mina wondering what's gotten into her. He got his answer when she pounced and tried to mold both their bodies together with how closely she pressed herself into him "You smell so good, I want cuddles." He rolled his eyes fondly holding her gently. When he presented he shrunk a few inches but it was fine. It still let him hold his friends perfectly so that was a plus.

"I think I was worrying about the wrong person going into heat." Sero nodded watching how Ejiro's eyes softened at the sight of Mina. He had it bad for her and Sero will make sure they get together. Mina was blind or in denial, for someone so confident she would rather scream and faint than to admit she wants Kirishima the same way he wants her.

"Make sure you scent some things for her. You know what she likes." Sero winked, chuckling at how flustered Kirishima got. "Also, one last thing." He looked down to make sure Mina was fast asleep a.k.a snoring and she was. Real snoring not fake snoring. He grabbed Kirishima's arm pulling him closer to him "I swear to God if you don't make your move I will tie you both together in the closet until you both sort out your feelings." He let go giving him a sugary sweet smile that had Kirishima sweating

"Heard you loud and clear." With one last look to Mina he went off to his dorm upstairs. Sero held her for a little while longer until he got hungry so, he gently moved her over enough that he can slide from under her onto the floor. When she snuggled into his blanket but, didn't wake up he made his way to the kitchen. While he had his back turned to the entrance he was unaware of someone sneaking up behind him. He was humming a soft tone making some yogurt with fruit and granola when a voice startled him

"Boo." He let out a yelp jumping and turning at the same time. He glared at the culprit and his brain couldn't catch up with his mouth

"Dammit Toshi! Why you scared me like that." He huffed still clutching his chest before pouting angrily at him confused as to why Shinsou looked surprised. Why was he surprised? He's the one who was scared just now trying to get a snack!

"I couldn't resist." Sero resisted rolling his eyes opting to look away from the boy- who was very close but, he couldn't nor wouldn't say anything about the proximity- and back to his yogurt.

"Do you want one of these?" He shook the yogurt cup in his hand at him not waiting for a response. "I'll make you one." It was his nerves actually talking but, it helped him not focus that his crush was literally a foot behind him. Close enough that he could smell him a bit. He smelled like cakes baking and coffee making his mouth water a bit. He finished the yogurt quickly putting a spoon in it and, turning around to hand it to him. He looked Shinsou in the eyes looking away and looking back "Here." Shinsou took it from him not looking away making Sero squirm. Shinsou caught the squirm and his face and voice went back to expressionless.

"Thanks Hanta." He turned around but, before he got too far he threw a smirk over his shoulder at him with a knowing look in his eyes "You smell really good." With that said he walked away back to the common room where he was hounded by the deku squad leaving Sero to just panic. His omega was happy that Shinsou called him by his first name but, he was confused. Why did he do that? Did that mean that Shinsou thought they were close enough? Did he want to be close like that? Or was it because he called him Toshi- OH SHIT HE CALLED HIM TOSHI OUTLOUD. Sero slapped a hand to his forehead sliding down to just sit on the floor. How can he be so careless? Then again Hitoshi didn't show dis-interest. It seemed he didn't even notice, unless he did and he didn't mind it? There was only one way to find out and Sero wasn't sure if he had the guts to say it out loud again unless Hitoshi decided to scare him again. Bastard. He ate his yogurt in record time not wanting to think too hard about the interaction. Maybe, he can leave him some more snacks? He seemed to have liked the strawberry pocky, and the cat themed chocolates. Sero has more of them in his room....Once he finished his cup throwing it out he looked back into the common room to see Shinsou was occupied. Perfect. He had time. He ran straight upstairs making a bee-line for his room. Shinsou was on the other end of the hallway as him so he had to make this quick. He grabbed a couple boxes of strawberry pocky, the cat-themed chocolates, a new cat phone case and other snacks and packets of his favorite coffee. If Sero thought hard about it, he was low-key courting him but, at the same time it could be a friendly attention-grabber. Shit. He was courting wasn't he.

"No time for those thoughts, just actions." Sero quickly got the goodies and opened his door carefully. He looked and sniffed the hallways. He didn't see nor smell anyone so he hurried up and practically ran to Shinsou's room. Shinsou always left it unlocked when classes were not in session so Sero quickly opened the door and sat the goodies on the bed. He was in such a rush he didn't realize that he scented the goodies but, there was no time he needed to leave cause he heard foot-steps. He quickly closed the door and got back to the front of his room just in time to see Hitoshi coming up the stairs. They both shared a look before Sero smiled and ran into his room slamming the door closed. Shit. That wasn't smart. Shinsou was going to his room and he would see the basket and know it was Sero. Sero was not ready for confrontation yet so he waited until he heard Shinsou enter his room at the end of the hallway before closing his door and bolting down the stairs. Now he was stuck between wanting to avoid Shinsou but, wouldn't that make him suspicious? Maybe he already was and he was the only one who thought he wasn't. This was too much thinking to be doing right now.

"Sero you're stinking up the space." He flinched looking over at Bakugo who was already glaring at him with an eyebrow raised. He was masking his concern as always behind his tsundere personality.

"I'm sorry, I was just thinking about some stuff. Hey, what game are you guys playing?" He turned to the couch and saw Mina was gone but, had left his blanket. He grabbed his blanket and got himself comfortable on the couch in front of the TV. He watched as everyone took turns playing as his mind wondered. Would Shinsou figure out it was him? Would he be upset? Is he even interested in having an omega let alone a male one? What if he's interested in him? What if he's not? Sero felt himself get upset so, before he started scenting the air by accident he got comfortable in his couch nook and decided to take a nap. It was after 7 anyway and he ate dinner early so a nap wouldn't hurt him.

----------------------------------------------------

When Sero woke up the first thing he noticed was that he was very warm and it was really quiet. He cracked open his eyes and, saw that he was the only in the common room. There was a single light on coming from the kitchen but, it was dim so it must have been the stove light. He went to stretch and noticed that he had more blankets on top of him. He brought the blankets to his nose and recognized the coffee and baked cakes smell as Hitoshi. He sat up a bit and looked around to make sure he was in fact alone. He grabbed the blanket and sniffed it rubbing it across his face and scent glands purring contently. Either two things had happened, someone had gone into Toshi's room and gotten his blanket or Hitoshi his-self had put the blanket on him his-self. The latter being the more likely but, Sero didn't want to get his hopes up too high. He could be nice and learning that his scent was comforting but, then again Toshi did say that he smelled good.

"I'm glad you're awake." Sero gasped clutching the blanket looking towards where the voice came from. Standing a little bit in the kitchen was Hitoshi. His hair wasn't up in a wild manner but was tied into a low bun a piece of hair framing the left side of his face. Wait a minute. He was alone. At night. With Hitoshi. His crush. The one who he wants to be his Alpha. Who caught him scenting his blanket. Shit. "It's okay, I'm not upset." He watched as Toshi held his hands up in a non-threatening manner. That's when it hit Sero that he had whined. "Does...my scent help you sleep? Stay calm, I guess?" Shinsou smelled a bit nervous which is to be expected. Sero was nervous too. He stared at Toshi as he stepped closer to him until he was standing in front of him.

"Did you...give me your blanket?" Sero had to know it was in fact him and, not someone else.

"...Yes I did...I finally figured out who's been leaving me courting gifts." Hitoshi smirked down at Sero who averted his eyes and decided to be childish and, hide under the blanket. He felt Shinsou sit down on the couch and pull the covers off of him. He decided to look everywhere but, in his direction. However, he was forced to look when Toshi pulled him into his lap facing him. Sero knew his face was on fire but, had to brace himself with his hands on his shoulders

"Um, uh, Toshi, what are you doing?" Sero was fighting himself, really fighting his brain and instincts. His brain was telling him to relax while his instincts wanted to lay flush against him and bury his face in his neck right by his scent glands.

"I'm holding my Omega." Sero's brain had crashed. His omega?

"Wait, wait, really? You want me? Seriously, I mean like I didn't know, cause you know, I'm not the best, but I-" He let out a yelp when Toshi growled and, tugged him closer forcing sero to lay against him. He seized up but, he ended up relaxing when Hitoshi let out calming pheromones.

"There you go, relax...I'm not one to play with anyone's feelings like that, let alone my own. I had a feeling it was you the whole time but, today confirmed it was you since your scent was all over it." Sero was embarrassed. He scented all the stuff. Maybe it really was courting gifts and he was just in denial the whole time. "There's no rush you know, we got time to take things slow and get to know each other better. That is, if you will let me court you properly." Sero pulled away to stare at him to make sure he was serious. From the dim light and whatever he can see of his face he knew he was being serious. Maybe this was his chance.

"I would love for you to court me." Sero gave a gentle smile and the only response was for Hitoshi to pull him back into his chest.

"Go back to sleep, I got you and we can worry about everything else in the morning." Sero was a little nervous but, the overall feelings to take over his brain as he was gently lulled to sleep in his arms was comfort, protectiveness and care.

-----------------------------------------------------------------------------------------

What do you guys think?