As an omega, Kirishima knew what his life would be like. Find an alpha, get bred by said alpha and have their babies.

He'd been against that lifestyle all his life, until he met the alpha for him.

Tetsutetsu was strong and manly, kindhearted and handsome. And it was love at first sight for both of them.

They went on a couple of awkward dates. Tetsu took him to a fancy restaurant and Kiri basically fawned for days about how much of a gentleman the alpha had been.

And how manly he was.

And how attractive.

And suddenly being an omega wasn't so bad.

Suddenly he /wanted/ to have Tetsu's babies.

Suddenly it all made sense.

On their third date, Tetsu proposed. Kiri was taken by surprise. They weren't even officially dating and the alpha already wanted to marry him?

Tetsu just told him he knew Kiri was the omega for him, that he didn't need more dates to prove anything.

He wanted to make what they had official.

So Kirishima asked him why not let his heat happen so they could bond as a pair.

And when Tetsu told him that he wanted to do it the traditional way, by marrying before a bond, Kiri melted.

Such a manly gentleman, he thought as he let the big alpha embrace him tightly.

"Yes! I do!"

And so they were engaged before their fourth date.

It wasn't weird to be engaged so soon, especially in omega-alpha couples.

But traditional weddings were becoming somewhat of a rarity, and Tetsu, the angel, just wanted to keep the tradition alive.

They spent a lot of time planning their wedding, super excited to start their new life together.

They were equal parts ecstatic and terrified. They were about to start a new and magical chapter but now at least they had each other.

Except a few weeks before their wedding, something happened.

A villain attacked the office where Kiri worked

The redhead was forced to escape, but he fell right into the hands of another villain.

One that induces heats and ruts.

The slimy, disgusting human being smirked as he sniffed Kirishima, licking his lips as he realised he was an unmated omega.

One that smelled fucking delicious.

The villain activated his quirk, and suddenly Kiri felt his knees go weak.

With tears in his eyes he began to struggle, feeling the slick ooze out of him. His omega cock bounced to life and pressed awkwardly against his trousers

An alpha. He needed an alpha. He needed an alpha to fill him up.

Tetsutestu.

No.

Any alpha.

Any alpha would do.

And suddenly, an alpha did appear.

And Kiri's mouth watered at the smell. It smelt like freshly made bacon on a cosy Sunday afternoon. No, it smelt better.

Before he could ask the alpha to knot him and fill him with his seed and his pups, the source of the smell was holding him, lifting him up by the hips and rutting against him.

The villain was nowhere in sight. But neither of them cared. They were alpha and omega, and the attraction between them was undeniable.

Rough kisses in between rugged pants. Hands tugging at invasive clothes. Fingers prodding at soon to be filled holes.

And Kiri was suddenly rammed into from behind.

And it was glorious.

Whoever this alpha was was doing a great job.

"Such a good alpha." The omega kept repeating, feeling the knot forming inside of him. "You fuck me so good, alpha."

The only response he got was grunts. They sounded satisfied, but still.

Kiri felt amazing. His whole body was on fire.

He'd had so many heats throughout the years but none had ever felt like this.

And it was about to get better because the alpha leaned down and bit his neck.

Claiming him forever.

The last thing Kiri remembers before blacking out is that he had the best orgasm of his life.

Kirishima woke up in the hospital.

He wasn't alone.

A blond he recognised from TV was sitting next to him, looking solemn and tired.

Kiri rubbed at his eyes and tried to pull the covers away from his warm body. He still smelt like sex and his heat, and he could feel it hadn't been long since it had ended.

The other man stirred and watched him intently, and finally Kirishima realised who it was.
It was prohero Ground Zero.

"Did... did you save me?" Kiri asked, but he noted his voice sounded hoarse.

The blond shook his head.

Kiri's hand went to the back of his neck, where it hurt like hell, his fingers gently moving over a wound he was familiar with.

Teeth marks.

"Oh." He gasped, realisation kicking in. "Oh, no."

The blond stared at him, looking as miserable as the omega felt at that moment.

"Tetsu..." Kiri bit his lower lip worriedly.

Ground Zero didn't say anything, he just watched as tears fell down the redhead's face.

"You... you caught the villain that did this, right??? You caught the villain that marked me?"

The blond still didn't say anything.

"You caught the motherfucker that did this to me. Tell me you caught him. Tell me."

"There... there was no villain." Ground Zero muttered, his eyes fixed on his clenched fists.

"Yes there was! He made me go into heat... He marked me! Look!"

When he got no answer from the blond, Kiri saw red.

"You useless hero! You're useless! You're pathetic! You had one job!"

"O... Calm down, okay? Calm down and we can talk about it."

"No! I'm not going to calm down! You don't understand anything! I was going to get married! I was going to be mated to my fated pair! I had an alpha! And that sick bastard did that to me and you just stand around and do SHIT!"

"Omega."

"Don't you fucking call me omega! Who the fuck do you think you are??? Get out there and lock up that fucking son of a bitch that did this to me!"

"I can't."

"Why not???"

"I did that to you."

Kirishima fell silent. His fingers curled into a ball, the sheets scrunched up in his fist. Suddenly it all made sense. Why the pro-hero was in his room, why his heat had ended.

His alpha was Ground Zero now. Apparently.