hiya everyone! HAPPY EASTER!

I decided to end this story at 29 chapters because I got to what I wanted in it but don't worry! The ending will be fun in my opinion! I knew how I wanted the story to be but that ending is always a pain in the ass.

It's bittersweet!

I haven't thought of any more izuku/tomura stories right now. Kind of on edge because I'm caught up on the manga and I am worried! lol

Izuku brought Tomura an actual sandwich with lettuce and tomato on it. The omega was going through pizzas left and right. Izuku had no issues with paying them because he was a supportive boyfriend but it was starting to be unhealthy with all of the greasy food. He whined a lot but he ended up eating it the sandwich with the offending veggies.

The preheat was strong once again for him.

Izuku felt so bad as he allowed his boyfriend to use his bathtub to bathe and relax for as long as he would like too. Tomura wasn't annoying to him but Shouto seemed to hate it- the fact he was in heat. He seemed more happy when the omega stayed quiet. Shouta did his best to stay away from him too but he claimed he was a few weeks away for a rut thanks to his new medicine and didn't want an early one.

The smell of roasting marshmallows was so strong, Izuku felt like the room was spinning sometimes. He had encountered a few people in his life with a very strong scent and they made his head feel funny but nothing like this. It made him feel unusually weird. He felt himself sniffing towards the paled haired omega more than usual and that was not something he did.

Ever.

It was hard to ignore how good he smelled when he was in his bathroom in his bathtub. He could not figure out how no one liked the smell of him. It was intoxicating and it made him feel almost drunk, dizzy and oh so wonderful.

"I'm going to head downstairs for a short bit to make dinner with Dabi."

"But I need you here," Tomura whined as he sat more up in the warm, soapy water.

"I will bring you some good food, ok? I promise."

"Finnnnneeeee."

Izuku smiled as he left his bedroom almost too quickly. Something was wrong with him.

I don't know what that was….. It felt like desire just smelling him? I literally just want to throw him against the nearest wall...

"You ok?" Ochako asked as he walked past her.

"I need to go outside," he said quickly without looking at her.

Ochako arched an eyebrow but then smelled something weird coming off of him as he opened the door.

"That's weird," she said as he slammed the front door closed.

Dabi shrugged and grabbed some steak from the fridge.

"Beef and broccoli with rice tonight, right?" she asked with a big grin on her face.

"Of course, at your request."

"I'll help some while he takes a break. He smelled a little weird though. It didn't smell like distress."

"I didn't smell anything weird. He smelled liked Tomura."

She started chopping up the heads of the green vegetable she loved while Dabi sliced up the meat into thin strips. He scraped into the pan and turned it on low.

"I'll go check on him."

Ochako shot him a weird look like she didn't think that was a good idea... but he was already gone before she could speak out her concern.

Dabi slipped outside and closed the door behind him. He saw Izuku sitting in the grass just pulling at it.

"You ok?"

Izuku's head whipped around and his nostrils flared. His pupils were blown out.

OH SHIT

"Izuku- what's wrong?!"

"I need a moment. I don't know…. I feel like his scent got to me," he answered, his voice almost robotic.

"It's alright. I'm sure at some point your body will react to him being like that. He did bite you and it probably has some lingering affects on you."

The green haired guy blinked a few times, his pupils finally reacting a little to the light.

"You think so?"

The black haired omega nodded, "Yup."

Izuku's right pupil returned to normal but the left didn't.

"Let me help you up," he offered as he leaned over.

That was a mistake. A growl rumbled through Izuku's chest as he stood up. He staggered a little making Dabi back off. The omega stepped backwards a few feet. There was a weird smell coming from the undetermined man after all and that smell made Dabi feel funny himself.

"Izuku, I'm gonna go inside."

It seemed as if it took one blink and he was pinned against the house. Izuku was a little bit shorter than him but Dabi felt small thanks to the smell radiating off of him. His breath was hot against his skin making him shiver. He looked to the side to see Izuku's hand was implanted in the rock of the house. The rock crumbled slightly under his grip.

"Izuku…."

"I need…. A minute. You smell so fucking good."

Oh shit. Oh no-

"Tomura smells better."

He rubbed his face against Dabi's just softly enough to send electric sparks down the omega's spine. Not good- not good-

"I have an alpha," he said his voice shaking, "Your friend Eijirou."

"I'm sorry."

Izuku backed up, blinking. His pupils went back to normal size.

"Oh…. Um, what are we doing outside? I think I did to take a break. You ok?"

Dabi nodded, "Yea. Just came to check up on you."

"Oh ok. I'll go back inside. Is dinner started?"

"Y-yea."

Izuku blinked slowly and his eyes looked slightly reddish but it dimmed off back to his bright, happy green eyes.

Izuku went back inside and leaving Dabi outside, stunned.

This is not good.

If this had been when Izuku first moved in, he would've dragged him to the basement and let Izuku do whatever he wanted to him but this wasn't the case anymore. It was some deep, dark part of him wanted this and he knew that wasn't right. The way he smelled that close, it was enough to almost make him start producing slick.

Oh he sure was attracted to Eijirou and the way his muscles felt around him but there was just something about Izuku he had wanted since the moment he met him. He had been annoyed that the green haired freckled fool couldn't see it. No one on the planet had been that nice to him before hand. He didn't invalidate him like most people did. He knew alphas and omegas could smell he was wrong.

Stupid omega instincts.

He went back inside, pushing those terrible thoughts to the back of his mind when he saw Izuku smiling and acting normal.

"I'll be back," the black haired omega announced.

Ochako watched as he sprinted upstairs with a frown on her round face. He beat on Shouto's door like his life depended on it until his brother answered the door.

"What-

Dabi shoved him and tried his best not to slam the door behind him.

"Call your girl now!" his brother hissed.

Shouto arched an eyebrow.

"Now."

"Fine, fine."

Dabi finally stopped and noticed how plain his brother's room looked. It lacked any character whatsoever. It had a bed, dresser, desk and a computer. That was it.

"Jesus dude. Can you add something in here?"

"Hello?"

"Camie!" Dabi said snatching the phone out of his brother's hand.

"What's up my dude?"

"We have an issue."

"Oh really? Do tell."

"I think Tomua's PHS is affecting Izuku because he left two holes in the house. It was eerily like…. Alpha behavior. He went outside to get a break from Tomura. What's going on- do you know what's happening?"

"I already know. Is this the first time he's done something like that?"

"No."

"Sometimes when an undetermined gets a mate, they tend to lean more to what their partner needs. If Tomura is close to his heat then Izuku may act more alpha like. Even though we cannot smell the differences, there is something in the pheromones from our partner's scents that cause our bodies to react in hyper dive. We can't control ourselves and if this is the first time around for him, he's gonna be like a just presented alpha teen. Ya understand?"

"What do we do?" Shouto asked.

"I can come hang out for the time. Just in case, Hitoshi will stay home. It will be unpredictable. I have a means to stop him but I think if it goes out of control, Shouto will have to do it. Don't tell Izuku though. Just in case, we need the edge to get to him first."

"Undetermined people are weird."

Camie laughed.

"We call it 'The Call.' I know a lot of people usually get in touch with other undetermines. I offer advice for those in special relationships such as ours or like Tomura and Izuku's. Unless they mate or break up, the effects will continue to come back every month. In the case if Tomura gets pregnant, Izuku's hormones will level out to be more supportive like an omega. He is 'beta' when Tomura isn't in heat cycle. When his omega in danger, he becomes 'alpha.'"

"We saw that….. well um, Shouta saw that."

"If he would've never started dating Tomura, he would've went alpha to protect his omega friends. We are quite flexible beings after all. I tend to be more omega than anything else so when Hitoshi is in heat, I tend to act like I am too. I can take the correct hormones to counter act if I want."

"Will he be ok with you staying here? You said you two are never apart," Shouto said looking slightly concerned.

"He's cool! He's on the couch just nodding away on his phone."

"Oh, ok…."

"I'll be there in an hour! Make the bed warm for me, Shouto. Bye bye!"

"Bye," the brothers said in unison.

"You were that scared?" Shouto asked arching an eyebrow.

"He….. smelled so good I would've dropped my pants if I wasn't in my right mind. I had to remind him of….." Dabi trailed off with his face heating up.

"If it affected you that bad then it's serious. You're a big ol' prude despite your appearance."

"Yea. I feel like I should be offended but I'm not..."

Shouto snorted.

"We can watch him and make sure things are ok. Let's head down stairs."

The two brothers went down stairs to see Ochako placing rice on a plate before the beef and broccoli. Izuku was weirdly close to her.

"Hey, is food ready?" Shouto asked.

Izuku's eyes snapped onto him.

"Yes," he said in a weird tone.

The beta arched an eyebrow but stayed quiet.

"This smells so good!" Ochako said with a smile, "Take this to-

"I will!" Dabi yelled.

She nearly jumped out of her skin at his yelling.

"O-oh ok-

Dabi snatched the plate out of her hand and ran through the living room for the stairs. Shouto shrugged and waited for a plate near Ochako. The way Izuku reacted was weird even for him…. He looked annoyed.

BAM BAM BAM

All three of them jumped.

"Coming!" Shouto said not giving anyone else a chance to get the door or to even react for that matter.

He pulled the door open to reveal Camie in a tight pink dress and her hair in a ponytail. She waved at everyone.

"Yo, what's up my dudes!"

She sniffed the air. Her eyes instantly locked with Izuku's. His pupils shrank to a pinpoint size making her give him a smirk. Shouto looked between the two of them.

"Is everything ok between you two?" Ochako asked looking at the beta curiously.

"Sure. Just invited Camie for a date night."

"Yum! I can't wait! Let me me put my purse in Shouto's room!"

X

Dabi slipped into Izuku's room smelling the intense scent of Tomura. His pheromones were choking out any other smell or breathable oxygen in the room.

"Dude, are you in here?"

The bathroom door swung open. The omega's face was flushed and he looked like he was drunk.

"Tomura, you gotta eat."

"I want Izuku."

"He's eating and busy-

"I smell him!" he whined as he leaned against the bathroom door frame.

"I know, I know."

"I want my nest."

"Alright. Eat first then nest."

The pale haired omega whined more. He sounded almost like a puppy dog. He managed to get him to eat some of it at least. Dabi ate what was left. He placed the plate on Izuku's desk and helped his friend to his feet.

"You're a pain in the ass sometimes."

Tomura gave him a look that screamed he wanted to cry.

"That's not necessarily a bad thing."

He whimpered a little more and let Dabi practically drag him through the room.

"I want his blanket."

Dabi reached over and grabbed Izuku's comforter and wrapped the omega in it. They left the room and headed for Tomura's room. It looked as if he hadn't slept in there much and the room seemed a little cleaner than normal. He wondered if the guy cleaned Tomura's room- Izuku would the kind of guy who would do that.

"Into the bed."

Tomura rolled onto the bed with the blanket. He looked an angry, horny burrito.

"I'll check on you in a little bit."

"I want Izuku!"

"I know but you can't have him right now."

He growled then moaned loudly.

"Love you dude."

He let out a whine as Dabi closed the door.

X

X

Dinner wasn't as tense as Dabi, Shouto and Camie thought it would be. It seemed being away from Tomura was helping him out. He was almost normal but it seemed he continued to keep sniffing the air like he was trying to smell for his boyfriend. It was a nice relief….

For the moment.

Ochako could sense something was up but she wasn't quite sure what it was. Shouto and Camie sat on either side of Izuku kind of crushing him in. The female omega tried her best to ignore the weirdness of it all but it was kind of hard.

Ochako: It's getting really weird down here.

Shouta: What do you mean? Isn't it always weird though?

Ochako: Like it's tense in here. Camie and Shouto are squishing him. It's like an Izuku sandwich down here.

Shouta: Does…. does it smell weird?

She sniffed the air softly.

Ochako: Um, I smell Tomura kind of?

Shouta: Shit. He must really be in heat. I don't smell anything in my room though.

Ochako: You…. you don't think Izuku is going to freak out and jump him do you?

Shouta: He can't. I don't think their paper work is finished yet. He can get in a lot of trouble even if they are dating.

Ochako: I know. I wonder if that's why Camie is here?

Shouta: Stay in my room tonight. I know I have to work in the morning but I want you near me just in case.

Ochako:….. are you sure?

Shouta: One thousand percent sure.

Ochako: Ok. Should I leave the living room right now?

Shouta: do you feel threatened?

Ochako: No but it's tense.

Shouta: I'll come down stairs. I need to install a coffee maker up here.

Ochako: It's a shock you haven't lol

She went on her Facebook and started scrolling to make it look like she wasn't just texting about everyone in the living room. She heard the steps creak a few times before looking up to see her fiance walking down the stairs. She flashed him a big smile before batting her eyelashes.

"You feeling ok?" he asked running a hand through her hair.

She nodded giving a low purr of happiness at the affection. The weird smell of threat filled the air. Her eyes snapped upward looking at her always tired alpha. His eye twitched a little meaning he smelled it.

Oh boy.

He leaned down closed to her ear.

"You wanna go up stairs?" he whispered.

She shivered slightly.

"Y-yes."

The to be married couple ran upstairs quickly.

X

Shouto and Camie had made sure he went to his room. Maybe he was losing it but he felt paranoid. He felt liked all his senses were on high alert and it was driving him nuts. He rubbed his temples. His head felt so cloudy. It was hard to say what was wrong with him. He could only think he was coming down with something.

Izuku rolled around on his bed. He felt so anxious. He felt like he hurt in some way he couldn't explain. He got up and paced his room. He just felt itchy all over. He stomped to his bathroom and showered. The smell of Tomura's heat lingered in tiled space.

He couldn't place where he would even feel like this….

UGH

He scrubbed his head almost too hard. He groaned and looked down at to see the soap going down the drain. His eyes widened some seeing he was hard as a rock. His dick was an angry red color and it hurt.

Izuku squirted some body wash onto his hand and started jerking himself off. It took a minute before it started to feel good. The odd sensation he was feeling wasn't something he had ever felt before. It was frustrating and he just wanted to cum.

Izuku wasn't a quick shot but it was like his hands wasn't enough. He laid down in the bathtub so he could stroke himself faster. He almost cried out with relief when he felt the pooling in his groin. He was so close it hurt. He could still smell the want and wetness of Tomura's heat even though he hadn't been in there for hours.

"Fuck!" he groaned.

Copious amounts of semen coated his thighs and the bottom of the bath tub. He let out a shaky breath trying to calm down but it wasn't enough. He could feel it wasn't enough. He needed Tomura. He needed to cum in him for this to stop.

He crawled out of the bathtub feeling defeated.

Gotta get to him now.

He inhaled sharply. He smelled Tomura from his room. He needed him.

Now

He got up, his body on auto pilot and headed for his door. It felt like it would take hours to get to it. Every step he made, his legs felt heavy like lead. He managed to grab the door knob and tried turning it but his hands were slippery from the shower.

Izuku had no idea why he instantly felt pissed off about it and he ripped his door knob off. He felt a tinge of guilt but it was gone the moment he got a bigger whiff of Tomura's scent. The smell of that warm, cozy fire with roasting marshmallows nearly brought him to his knees. It had to be the best smell of his fucking life and he didn't care if it meant his death. He felt like his sanity was hanging on by one tiny thread that was breaking bit by bit.

Gotta…. get to him. Gotta-

His ears perked up to the sound of Tomura's whines and he let out a strangled cry himself. His omega sounded like he was in pain…..He needed him now- to make his omega feel better.

Shouto's bedroom door flew open to reveal Shouto and Camie.

"Izuku!" Shouto yelled.

Izuku's eyes flickered to him then to Camie. He let out a low growl warning them to back off.

"You have to leave him alone."

"NO!" Izuku snarled.

Pheromones filled the air. Shouto wrinkled his nose at it but Camie seemed slightly affected. She shook her head for a moment trying to get her bearings.

"You gotta back off. Now."

"Mine!" he snapped, "I WANT MY OMEGA!"

Shouto stepped in front of Camie. She looked like she was shaking a little bit. Izuku didn't see it but she passed a syringe into Shouto's hand. It was one of her knock out drugs just in case they had a run in with a rowdy alpha or if she lost any control when her omega boyfriend was in heat.

"Go back to bed. We don't want you going to jail or having to pay hefty fines for it. I know you want him and it hurts but you need to go back to your room."

Izuku bared his teeth, his canines growing some and his eyes were flickering with red.

"Stand down."

Shouto kept his eyes trained on Izuku as Shouta came out with his voice strong. He had been asleep until Ochako woke him up, actively terrified. She was shaking with fear but the smell of her slick filled his nostrils. Izuku was producing a weird affect on everyone.

It smelled like a teen alpha unable to control his impulses.

"GET OUT OF MY WAY!"

He definitely smelled alpha. He looked so much bigger….. Or was he just giving of the smell of a big alpha?

What kind of undetermined male is he?

"Izuku, I will do whatever it takes to make sure everyone in this house is safe and that includes me taking your ass down to the floor."

"MOVE!"

In one shift movement, Shouto shoved Camie into his open door. She landed on her ass letting out a yelp. Izuku tackled Shouto to the ground. He managed to bring the beta down to his knees. He swung with the syringe in hand and Shouta grabbed both of Izuku's arms as Shouto aimed to administer the dose. The needle sunk into his back and he pressed the plunger down as fast as he could.

It took ninety seconds before he dropped to his knees, turning into dead weight. Shouto threw the needle onto the ground as Izuku collapsed onto him. The threatening air around him was gone immediately and Camie seemed to be more aware now.

"You ok?" the alpha asked kneeling down by the beta.

"Yea, he's a little heavy."

"Holy hell. I'm too old for this shit…." Shouta said sliding his hands in Izuku's armpits to pull him off.

"You ok?" Shouto asked looking at Camie.

"Y-yea. Those were some strong pheromones. I think…. I soaked my pjs honestly. I think I was close to…. a heat myself. Wow."

"You have any clothes? You can borrow mine," he offered.

She got up then helped her beta boyfriend to his feet.

"S-sorry."

She looked down at her feet.

"Don't be upset. I'm not. I can say he was terrifying to me. Shouta has never even been that threatening before."

"Should we padlock his door from the outside?" the alpha asked.

"I think that would be the best idea at this point. Let me look through the garage."

"Of course."

Camie followed after him in silence. Shouto started looking through all the drawers in the old desk that was out there. The ground was cold and dusty. None of them ever went out there unless they had too. It was filled with Father's wood carvings that neither one of them could clean up and throw away. The asshole used this house as an escape when he wanted but in the end he abandoned it like he did his whole family… emotionally anyways.

Dabi didn't ever want to step out there. He did it when he had too but it would be too much for him. This whole house was a tomb. A reminder of the pain and hate all them had suffered over the years. Shouto never figured out why Dabi would've wanted to move in here but he didn't wanna ask him.

The chances of finding a big ass house like this was slim to none.

He finally found a brand new (dusty) padlock with a set of two keys. He opened it up and threw the trash on the work bench. When he turned, he saw Camie standing there barefoot, looking upset.

"Why aren't you more mad at me?" she asked quietly.

"Do you want me to be?" he asked tilting his head to the side, "I see no reason to be upset with you."

She looked at the floor shamefully.

"If this is about your hormones whacking out because of Izuku's dropping out of his body, then you have no reason to be ashamed. It's a reaction. Undetermined people are thought to have no second gender but that's a myth. You being undetermined is your second gender. I had been reading up on it since Izuku moved in and more so when we got together. I will never be angry for what biology makes you act towards. You didn't show your ass to present or anything like that. You had a reaction to the pheromones in the air."

"Yea."

"I am not my father. If you decided to sleep with someone else other than me or Hitoshi then you control that but in those moments where instincts take over, you can't help yourself. It's like my brother going into heat. I cannot blame him for that. Your circumstances are different but just as similar. I cannot be against you for it and if I was, I should've been with another beta. You no longer have to question where you stand with me in that regard."

"O-ok."

Shouto took her hand and pressed his lips against it.

"As cheezy as it is, you and Hitoshi color my world. Even all the shades of whites, grays and blacks are brighter. Don't down play what we have because I never will. We are more than our genitals. Sex is the bonus for me because your brain is what matters the most."

The beta gave her hand a squeeze and they left the garage to be cold and empty of life once more.

Get ready, it's gonna be painful and tense now :)

I decided chapter 29 will the last chapter after having some time thinking about how I wanted to end it. 7 chapters left!