If you asked Izuku what Katsuki smelled like to him, he’d say home.

-

Cw: bkdk, abo, a!baku and o!deku, only slight nsfw (barely there tbh), no real plot and time skips

He smelled warm and safety. Like an open fire, where you roast marshmallows. He smelled like the awe-inspiring hero he was. Powerful and strong, but also soothing with the undercurrent of sugar from his quirk.

Katsuki smelled of life. And Izuku was addicted to it.

If you asked Katsuki what Izuku smelled like to him, he’d say love.

He reeked of it. Of unconditional and never ending love. Like wildflowers and honeysuckle that bees would be jealous of. He smelled of an intoxicating mix of flowers and vibrant happiness.

He smelled of everything Katsuki wanted from life, and he felt like the luckiest alpha alive to call the omega his.

Though Izuku would deny it, Katsuki truly knew he was the lucky one. After their history, in and out of school, he was the lucky one to be given a chance.

A chance to make the man fall in love with him.

It took work, everything worth it in life did, but Katsuki somehow did it, and they bonded at age 26. Both in the top 10, neck in neck, always chasing one another through the ranks.

When Katsuki asked to marry Izuku, to mate and bond to him, his scent flared so much that it slipped past his scent blockers. Sickly sweet honeysuckle overtook his senses as Izuku immediately started spouting ‘yes!’ over and over and tackled him into a hug.

And then on the day of their wedding, on the cusp of Izuku’s heat to properly bond that night, Izuku couldn’t get the scent of Katsuki’s subtle arousal throughout the whole day filling his nose.

The heady caramel scent making him flush and want to pant openly.

But he couldn’t. He was on so many blockers for his pre-heat scent and hormones. He just had to make it through the day and night, and then he could be as desperate for Katsuki as he felt.

He made it, just barely. He couldn’t get the scent of Katsuki out of his nose for weeks after.

Katsuki knew he was pregnant before Izuku himself knew.

It was three months after their 2nd year wedding anniversary that the alpha noticed it.

It was right after the omega had taken a shower and brushed his teeth before climbing into bed beside Katsuki.

Izuku’s honey floral scent was... different. It was tainted with fear or anxiety, or even arousal. Katsuki knew those scents by heart to watch out for them.

His scent was tainted with.. milk? And suddenly flashes of a very pregnant Momo filtered his head and remembering her overly milk scent when it hit him.

Izuku’s heat was late. Izuku should have warned him last week that they needed to sign the heat-leave paperwork at the agency.

They should be stocking food and water, but there in bed. Sitting side by side. He has a book in his hands and Izuku is taking notes from some web article on his laptop.

All he could smell is Izuku’s newly milky scent, clouding over the honeyed scent he fell in love with. His husband was pregnant.

And all katsuki did was drop his book and pulled Izuku into a kiss.

‘Kacchan?’ Izuku asked confused when he pulled away, ‘Is something wrong?’

‘We need to clear out the spare room,’ He started, smiling so brightly at Izuku, knowing his happiness was affecting his scent as Izuku’s eyes dilated, ‘You’re pregnant.’

‘What?’ Izuku said dumbly, making katsuki chuckle.

‘We’re going to need a nursery, or maybe we should just look for a bigger place?’ He grinned, shutting Izuku’s laptop and pulling it off his lap, fully expecting a round of celebratory sex at the shift in Izuku’s scent.

He didn’t expect Izuku to sprint into the bathroom.

Katsuki eventually followed when he realized Izuku wasn’t coming back as soon as he would hope, and found him staring and waiting over a pregnancy test. Well over three different ones. (All different brands he noticed as well.)

Katsuki waited with Izuku. Sitting on the closed toilet and pulling Izuku into his lap to wait. Until all the tests turned positive, one by one.

Then Katsuki was slammed with the smell of arousal coming from his smaller mate, now smothering his face with kisses.

‘I love you, i love you i love you,” Izuku repeated over and over, already shucking off his too large tee shirt (Katsuki’s) and boxers, then pawing at Katsuki’s clothes.

But before he could grab ahold of his sleep pants, Katsuki lifted his mate and carried them back to bed.

‘I love you too,’ Katsuki growled into the mating bond on the side of Izuku’s scent, ‘And I love you enough to fuck you on our actual bed and not the goddamn bathroom counter.’

Izuku went to the doctor the next day. Both he and Katsuki called into work without a shred of guilt that he usually would feel.

And they found out Izuku was just about two months along, maybe a little longe give or take a week or so.

Izuku wondered when it could have happened, since he last heat was over three months prior. He was confused until Katsuki leaned over when the doctor left the room and whispered, ‘After hours, on my desk after that villain attack.’ And Katsuki didn’t have to say anymore.

Izuku remembered every detail, and tried to cool his raging blush before the nurse came back in with his new list of prenatal vitamins and discharge paperwork. It didn’t help Katsuki was reeking of pleased Alpha pheromones.

As embarrassed as he was... Izuku was happy. Their sweet scents showing off their happiness as they left the office with a date for his first real ultrasound.

They never talked about kids, just the mutual want for them. Eventually. They just decided that they wouldn’t stop it if Izuku got pregnant, and here they were. Almost 30 and getting ready to have their first pup.

Izuku knew he would never get tired of how happy Katsuki looked when he gazed at his still flat tummy or the paperwork that spelled it out in black and white that they were going to be parents.

His scent was lighter than normal. More sugary than musky. Izuku liked it. He loved it. He did that to Katsuki, made him that happy that he isn’t reigning in his scent, letting his joy be known.

And when Izuku gave birth to a beautiful and very healthy boy seven months later, Katsuki had to wear a scent blocking collar as well as their government provided cream and spray, because he was agitating the other expecting parents in the maternity ward.

None of his friends let him live it down.

Neither did Izuku, giggling and poking the blond in the side with a happy smile. Kissing Katsuki, and then the collar.

‘Shut up,’ Katsuki growled as he sat beside Izuku on the hospital bed, cradling their little boy.

‘I didn’t say anything,’ Izuku said innocently.

‘I heard your smug thoughts, nerd,’ He huffed smiling softly as the little bundled huffed himself and squirmed a bit, getting hungry

And Katsuki shifted the baby over to Izuku, where his chest had swelled with milk to feed their child.

‘I might just miss your milky smell,’ Katsuki said after watching his son feed for a while, embracing the silence and soft sound of his suckling.

Izuku flushed and looked startled at his husband, ‘W-Well, it’s not going to go away anytime soon as I’m breastfeeding,’ He started, shifting a bit, filling Katsuki’s nose with a hint of his sudden arousal.

‘And who said we’d stop at one baby?’ He whispered, even though they were alone.

Katsuki growled and kissed Izuku fiercely, though very aware of the baby between them, ‘I’m going fuck you so good as soon as we get home.’

The blunt statement left Izuku hot and bothered as he fed his child, who was blink his newborn eyes at them curiously.

Toshimi, named after their mutual idol and mentor, was the perfect mixture of the two.

He was both equally sharp and soft in the face, his pale skin littered with freckles as he aged, though not as many as Izuku had.

His eyes were his sire’s brilliant red, but mirrored Izuku’s in shape and vibrancy, as did his green curls.

Though he took more of Izuku’s coloring, his features were all Katsuki. Sharp eyes and jaw as he grew both tall and wide with his years. And then his scent.

When he developed Katsuki’s quirk entirely, his neutral floral scent caramelized.Turning sugary sweet, and then loosing his floral hint completely when he presented at 16 as an alpha.

This was everything they both wanted. After Toshi, the number one spot they both shared before the boy was born, was put on the back burner, neither one truly caring that their rank was decaying with time. Family was their main focus.

They still ran their shared agency, and everyone understood. Their friends and family, their colleagues. Even talk shows and online articles circulating over the topic praised them for making their son their main focus.

And then it turned into sons when Izuku gave birth to another when Toshi was 4, and then another when Toshi was 7 and Hīrō was 3. Their third boy, Mayumi, was their last.

Their home was loud and messy and never truly empty as they have two cats as well.

It was home.

It was overpowered by the scents of four alphas, Katsuki and their sons, as well as caramel and burnt sugar as they all had some variation of Katsuki’s quirk.

But it was home. And neither of them would change a thing.

The couch cushions smelled of safety and spilled coffee. The carpet stained from a lost but never forgotten bowl of katsudon, and faintly smelled of it too (if you were crawling on the floor.)

There was a hole in the bathroom covered up rather than fixed with their busy lifestyle from Hiro’s teenage angst years, and yet.

Izuku loved every flaw. Every stain and every chip in the paint. And so did Katsuki.

Because it was theirs and they made those rowdy boys that really gave the top hero’s a run for their money.

they were mainly happy for getting a second chance at life. At love and friendship, and made a whole fulfilling life out of it.

They were home.