Present day

Aizawa groaned as he looked over the essays he was grading. "Kaminari, don't ask Kirishima for help. Go to like Iida or Midoriya." He grumbled setting the paper aside.

He laid his head down and sighed before he suddenly got sick and tossed his breakfast into his trash can. He sighed and got up shuffling to the bathroom.

As he walked down the hallway someone walked up next to him before wrapping their arms around him making him yelp.

"Hey, babe." Hizashi said kissing his cheek.

"Mic." Aizawa said as he looked around making sure none of the students were around.

"What's wrong?"

"Nothing. Just not feeling that good I guess." He said turning to look at his husband. "Also, you know how I feel about PDA at school."

"I know but when your husband looks and smells as good as you do, you can't blame me for wanting to be close to you." He said smiling as he looked down at him. "Speaking of which did you change your shampoo or something? Or is it a new cologne?"

"No, it's been the same for years, plus you would know we live in the same house, idiot. Are you going into rut?" Aizawa asked pulling back.

"No that's not for another month are you going into heat? Your scent is different." Hizashi asked raising an eyebrow.

"No, I'm not." He said rolling his eyes as he continued to walk.

"Well whatever it is I like it." Hizashi said walking with him. "So where are you headed?"

"Bathroom, then I gotta clean out my trashcan because I tossed my breakfast." He said rubbing his face.

Hizashi whimpered at that as he looked at his mate. "Shota, are you okay? Are you sick?" He asked feeling his forehead.

"'Zashi, I'm fine. It was just one time I feel better already." Shota said shaking his head.

"Are you sure? Because if you want I can talk to Nezu and Midnight can cover your class for the rest of the day." He said fidgeting with his hands. Which is a nervous habit he picked up when they were younger.

"No, I'm fine besides we're supposed to get a new student today so I wouldn't leave anyway." He said as they got to the bathroom.

"If you're sick you should go home and rest." He said pouting.

"I'll go home after school and rest then." He said rolling his eyes as they walked to the teacher's lounge.

"I don't get it; how can you keep up with a relationship and still be a teacher plus with all the news interviews you do?" Midnight said looking across the table at Toshinori.

"It's simple, we make it work. Yeah it's hard at times but we both understand why. When we have a problem, we talk about it." Toshi said taking a sip of coffee.

"What are you talking about?" Mic asked looking at them.

"Nemuri here was wondering how I can stay in a relationship for as long as I have seeing as hers don't last longer than a month."

"I haven't had a meaningful relationship since high school when Tensei and I were together." She said laying her head on the table. "How have you and Aizawa lasted so long?"

"That's easy, we don't have secrets from each other. I also make sure to show him affection all the time. Which he secretly loves." Hizashi said sitting next to Nemuri.

Aizawa walked behind Nemuri to get to the coffee pot before another wave hit him and had him running to the bathroom again.

Hizashi blinked before running after him and holding his hair and rubbing his back. "I really think you should go home Sho."

"I told you I'm fine." Aizawa said getting up and washing his mouth out as best he could. "Lunch is almost over I'm gonna head back to class."

"Shota, I'm taking you home so you can rest." Hizashi said grabbing his hand.

Aizawa growled and yanked his hand away. "You maybe my alpha but don't you dare tell me what to do." Aizawa said flashing his eyes before he walked away.

Hizashi stared after him not sure what he did. He stood there until he heard the bell ring before running to class, so he wasn't late.

Aizawa sat down in his classroom before placing a cloth over his trashcan. The kids started to trickle in talking to each other before sitting down. Aizawa looked at them and noticed a few that looked dazed.

"Iida, Asui, Sero, Hagakure. Go to recovery girl." Aizawa instructed.

Those that were close to them covered their noses with their shirts. "I told you to go see her at lunch." Uraraka said looking at her friends.

"Man, I knew something was up with you." Denki said as he helped Hanta with his stuff.

Iida blinked and shook his head as he got a whiff of Uraraka's scent. He growled as he got up before being tackled by Izuku and Shoji.

"Iida, back down." Izuku said using his alpha voice. He was hoping it would jar him enough to snap him out of it.

Iida growled and tried to get out of their grips. "Omega's against the wall. Beta's stand guard." Aizawa said as he jumped over the desk to stand between all of them.

"Iida stand down before you do something you'll regret." Shoji said pulling him back a few feet.

"Tokoyami, take Asui, Hagakure and Sero to recovery girl. How all of you went into rut and heat at the same time I will not understand." He said as he used his quirk to erase Iida's.

"Dude calm down before you hurt someone." Izuku said as he sat on top of him.

The omega's of the class were huddled together against the wall with Ojiro, Koji, Kyoka, Eijiro and Mina in front of them. Seeing as they were beta's they weren't affected by heats and ruts like Alpha's and Omega's.

Izuku growled at Iida as Shoji tried to get his hands behind his back. "Okay, one more alpha go with Shoji and Midoriya get Iida to the dorms and I'll have recovery girl come by later."

Yaoyorozu stepped forward controlling her breathing as they all grabbed Iida herding him out of the room.

Once they were far enough away Aizawa took a breath stepping away from them. "Alright everyone back to your seats talk amongst yourselves."

He said waving a hand as he went to sit down. "Uh.. excuse me is this class 1-A?" A voice asked knocking on the door.

"Yeah it is. What do you need?" Aizawa asked looking over to the person in the doorway.

"I'm the transfer from the general support class." He said rubbing the back of his neck walking in.

"Right, uh.. introduce yourself I guess." Aizawa said laying his head back down.

"I'm Shinso Hitoshi, I'm an omega. My quirk is mind control and I'm not here to make friends." He said shrugging before putting his hand in his pocket.

They all welcomed him and showed him where his seat was as Aizawa seemed to be asleep. In reality he was staring wide eyed at his desk as he heard the kids name.

"Yo Sparky!" Shinso said trying to get Kaminari's attention. "Is the class always this empty?"

"Not normally, a few of our classmates had a little mishap and went to recovery girl. One was taken to the dorms." He said turning to look at him.

"That's only four, what about the others?"

"One went to take the three to recovery girl while the others took the one guy to the dorms." He said smirking at the guy.

"What kind of mishap?"

"Three were in rut while one was in heat, one of the alpha's freaked out not sure why and three other alpha's had to drag him out."

"Okay, I'm rethinking becoming a hero if you're not made to keep track of this stuff." He said crossing his arms.

"Hey, eye-bags! You don't know us so don't act like you do!" Katsuki said setting off a few explosions.

"I'm just saying for four students to leave class because they didn't know about their cycles it just seems irresponsible." He said shrugging rolling his eyes at the nickname.

"Listen here you little shit! You don't get to talk about us like we're some two-bit hero's or something!"

"Bakugo, dude calm down. I'm sure he didn't mean anything by it. Besides you can't blame him because as you said he doesn't know our class." Denki said getting between the two students.

"Get out of my way Dunce face!" He yelled as the others walked in.

"Katsuki Bakugo!" Midoriya yelled standing in the doorway with his arms crossed.

Katsuki froze and looked at him before letting out a whimper as his scent turned putrid.

Midoriya sighed and walked over to him gently holding out his hand. "Kacchan, I'm sorry I yelled at you, but you know how I feel about you insulting our friends." He said cupping his cheek.

Katsuki tried not to cry before burying his face in Izuku's neck. "You don't hate me?"

"Of course, not baby." Izuku said petting his hair. He smiled when he smelled his mates scent return to normal. "I'm sorry about him, we're working on manners." Izuku said looking to Shinso.

"I'm Midoriya Izuku, and this is Bakugo Katsuki. My mate." He said holding out his hand.

"Nice to meet you two." He said nodding to them tilting his head. "Okay, I don't mean to be rude but none of you seem like your secondary gender."

Todoroki laughed dryly as he got up from his seat. "Yeah, everyone says that. I honestly thought I was going to be an alpha. Turns out I became an omega." He said shrugging.

"If you hadn't told us what yours was I honestly think we would've thought you were an alpha." Kirishima said from behind him. "Kirishima Eijiro, beta."

They introduced themselves one by one also updating him on their classmates. Once class let out they showed him the way to the dorms, and he sighed as he thought about how open these people were.

"We'll let you get settled in then you can come down for dinner." Kaminari explained as he showed him to his room.

"You guys eat together?" Shinso asked quirking an eyebrow.

"Yeah, once a week we have a class/pack dinner." He said shrugging. "It's a bonding thing, your old class didn't do that?"

"Well they ate with each other, but I wasn't interested." Shinso said opening his door. "Thanks for showing me around." He said before closing his door.

Kaminari looked at the door before he chuckled and shook his head. "He's going to be tough. Although the hardest things are always the best."