I was going to write this before/around christmas, but it got delayed. Anyhow, here it is.


"What do you mean 'not pregnant'?"

Kakashi and Iruka stared at the blonde hokage in disbelief as Iruka stuttered out the question while looking at their leader, standing there with their test results in her hands.

It had been one month since they had bonded during Iruka's heat, and they had finally gone to see the hokage to confirm that Iruka was pregnant. Considering the fact that they had mated for several days straight during Iruka's most fertile time of the year, the thought that he wouldn't be with child hadn't really crossed their minds at all.

"Like I said, the test came back negative, as it should have."

Both men stared at her like she had grown another head, which made her roll her eyes before leaning back against her desk, looking over the two men in front of her.

One of them a very skilled teacher, and the other one of the most deadly and advanced shinobi in the entire village, and yet it seemed like they hadn't caught on what she could have told them as soon as Iruka's heat had ended if they had come to see her right away.

"Iruka, I am correct to assume that you have used your suppressant medicines since before your first heat, and that this was your first time letting yourself have a heat period?" Iruka just nodded and looked confused. Tsunade smiled gently.

"An omega rarely ovulates during their first heat, biologically they have the first heat in order to attract an alpha to bite their neck and bond with them. It is somewhat stronger than a normal heat, and it's pretty common for an omega to get bit during their first heat compared to later heat periods in their life."

Kakashi and Iruka still looked a bit confused, but nodded their heads slowly, taking in this information. Now that she had said it, Iruka did remember this information from biology classes, but it hadn't crossed his mind due to his age. For him to have his first real heat when he was nearly middle age, somehow it was embarrassing.

"I wouldn't worry about it too much though. Now that you two are bonded, your heat will only affect your mate, Kakashi here, so you can stop using the suppressants completely. You will probably conceive within the next two or three heat periods if everything is in order, so say within a year or so. Your heats may come a bit irregular at first, since you've always been on suppressants, but it should settle down in due time. For now I will prescribe some pre-natal supplements for you, and have you checked two weeks to a month after each heat, ok? Come see me if any of you have any questions or such."

They nodded again in silence, and after writing out their prescription they were swiftly ushered out of her office, hearing her mumble about having more patients to see and no time for clueless shinobi. Hearing the door closing behind them, and standing there with the prescription and various informational booklets about heat periods, pregnancy and childcare, the two men glanced at each other, blinking a few times.

During the month since Kakashi had bitten Iruka's neck and bonded with the brunette, he had felt protective over his new mate. He had thought for sure that he felt like that because of Iruka's assumed pregnancy, but now that they knew the brunette was currently not pregnant, he could only imagine how protective and possessive he would feel once the brunette went into his second heat.

They had already agreed to have Iruka move in with Kakashi in his house, since it would be more suited for child rearing than Iruka's apartment, and they had gotten to know each other pretty well during the last month. One of the rooms in the house, one next to the master bedroom, that had been used as a storage unit until now, had been chosen to become the nursery. They had installed a door between the bedroom and nursery to make it easier to get to, and were currently in the process of choosing wall papers and color theme.

"Well, we have more time to finish the nursery now, at least..." Kakashi mumbled, mostly to himself, and noticed that Iruka nodded with a blush.

On their way back home they decided to go and try to find some lunch, and as they came around the corner of the resturant main street of the village, they could hear a familiar voice call out to them.

"Hey Kakashi, my eternal rival! Iruka-sensei, you too!" Kakashi groaned as a muscular arm came up around his neck, his green dressed rival, Gai, hanging over his right shoulder.

It only took Gai a few moments to notice the booklets in Iruka's hand, and his eyes widened as he caught a wiff of the brunettes smell, clearly picking up the familiar smell of his silver haired rival in there.

"Ooooohhhh..."

Kakashi groaned again, and pushed his friend off his shoulder. He walked up to his mate with a lazy poker face look on his face, and promptly wrapped his arm around the now once again blushing brunette, pulling the man close.

After a moment of pure surprise, Gai started clapping his hands enthusiastically. Iruka wanted to sink through the earth.

Since their bonding, they hadn't really done much public announcements about their relationship. They both still went to work and took their missions as shinobi, and met up later in the day. Since they had been working a lot on moving Iruka into the house and also been working on the nursery, they hadn't been out and about much. When they had been out they had been to restaurants or shopping for groceries etc, so most people probably hadn't picked up any special signals that they were bonded, and only those who knew Kakashi's smell well would know it was his smell that was mixed into Iruka's. Normal betas naturally wouldn't have a clue, only alphas, some omegas, and of course those who were shinobi would know that Iruka's smell was mixed.

Naturally now that Gai knew, it only took a few hours for pretty much any shinobi and every civilian in the village to hear the news. First he told all their friends who joined them for lunch, and he even insisted on paying their food as a bonding gift, and after that he had gone around the village telling everyone he recognized that his eternal rival had found a strong and healthy mate to bear him children. The news of the copy cat ninja having found a mate spread like a wildfire through the village. Before sunset there was hardly anyone who hadn't heard the news.

All afternoon and into the late evening, shinobi and villagers that had heard the news came over to Kakashi's house to give small gifts and congratulate him and his new mate, many being surprised to see that it was Iruka. Not many people in the village had known that Iruka was an omega, and the brunette found it a bit overwhelming to greet and talk to all the people coming over. Sake was being served, and it didn't take long before it had turned into something of a shinobi house party.

Iruka found himself sitting with some of the female shinobi and a few male and female omegas, talking about mates and children. This was the first time he had talked openly with others about his sub-gender like this, and while he found in embarrassing, he also found it to be very pleasant. Now that he was bonded he was glad to notice that the presence of so many alphas didn't intimidate him any more, as it would have in the past, this was also a nice change.

Kakashi was standing across the room with several male alpha shinobi, who all congratulated him on finding a nice omega to settle down with, patting him on the back and pulling jokes about how hard it was on them to be without mates. Every now and then Kakashi would glance over, and catch the eye of his partner, who would then give a shy smile.

His shy, polite, and proper little Iruka. If only these people knew the needy and perverted look he would put on when he rode Kakashi, begging him to thrust deep and pump his seed into the brunette.

Smiling under his mask he was secretly very pleased that he was the only one that would ever see that side of his mate.

The party kept up into the night, and it was well after two that Iruka and Kakashi exhausted fell down into their bed with a deep sigh. They looked at each other and paused, then smiled tiredly at each other.

"Well, that was interesting." Kakashi thought to himself that in one evening there had been more people in his house than during his entire time growing up.

Iruka rolled on his back, throwing an arm over his eyes with a tired smile.

"We have to unpack all the gifts tomorrow. Just so you know the fridge is packed, we have to make bentos tomorrow so we can use it all." Kakashi grunted in approval. He really hadn't expected this many people to come to congratulate him and his mate, and he had been really confused when people started to give them gifts as well.

He sat up and stretched. He smelled heavily of other alphas, and he didn't like it very much, so he decided that a quick shower before bed would be best. He removed his vest, his shirt, and his mask, and then he froze mid movement as he had finished removing his pants. He stood still for a split second, before climbing back onto the bed, shoving his face down next to Iruka's neck, taking a deep inhale. Iruka laughed and tried to push him away.

"What are you doing? Haha, that tickles!"

Kakashi pulled back enough to look Iruka in the eyes. It was then Iruka noticed how dazed the silver haired man looked like.

"Kakashi? Are you ok?" Iruka reached up and stroked Kakashi's cheek, not breaking eye contact.

"You're in heat, Iruka. It's still a bit faint, but you're definitively in heat."

Iruka could smell Kakashi's rut starting, the strong alpha scent coming down over him like warm summer breeze, and his eyes widened as he inhaled it. He had thought the room was a bit warm, or that it felt like it was because of the sake he had drunk at the party, but Kakashi was right, his heat was starting, he could feel it.

Kakashi licked his lips slowly before swiftly claiming Iruka's mouth with his own, and Iruka's senses exploded. Oh yeah, this was his heat alright.

They clung to each other desperately, and both of them started to pull on each others clothing, trying half desperately to remove all hindering layers of fabric, with Iruka's shirt going first.

Kakashi was quick to get his underwear and lastly Iruka's pants of, and proceeded to shove his face into his mate's crotch, pushing his face into the briefs which hid the treasures of his partner.

"Ah, Kakashi..." Looking up and seeing his mate's lustful face watching him almost made Kakashi come on the spot. The smell was different this time compared to the last, and in the back of his mind he could hear Tsunade explaining that this was a different kind of heat. This smell was deeper, milkier, richer, but not really making Kakashi go into a crazed state just yet, but somehow it was more arousing than it had been the last time.

As he removed the underwear of his omega, and the smell hit him in full, he knew for sure.

This was the smell of an omega that was about to ovulate.

His mate was ready to receive his seed, to be filled with his offspring, to be mated, fucked and filled.

He sat up, pulling Iruka against his own body, his fingers dipping down to a moist cleft, stroking Iruka's hole. The smell that had been so faint just a few minutes ago was getting stronger by the second, and Kakashi was already painfully hard, rubbing against his omega. He let his fingers thrust in, and Iruka moaned deeply, and as Kakashi started to fuck Iruka with his fingers, the brunette moved his hips wantonly.

"Kakashi, please..." A shiver went down his back, and his cocked jerked, hearing the lustful voice call out to him.

"What Iruka? Tell me, what do you want?" He felt more in control of himself this time, not as desperate as the last time.

"Kakashi, please, please..." Iruka threw an arm over his eyes again, but he didn't stop moving his hips, nor did his cock stop twitching as Kakashi's fingers brushed deep into him.

"Say it, Iruka, say it out loud." Kakashi was panting now, while he felt more in control than the last time, he couldn't wait to be inside his mate.

"Please...come inside, please...fill me with your...semen, please, Kakashi..." Iruka covered his face with both his hands, the embarrassment of the words getting to him, but the need to have his mate was stronger.

Kakashi let his head roll back slightly, feeling pre-cum already flowing down his cock from the excitement.

"As you wish, my love."

He rubbed his cock along the cleft briefly, covering it with slick, and then thrust in slowly. His body was covered in sweat, and he could feel his breath speed up as the heat engulfed his cock.

Settling in deep inside his mate, he leaned back, and looked down on Iruka while taking a hold of the brunettes legs, spreading them and pushing them forwards slightly so that he could get a better angle as he started to thrust in and out.

It didn't take long before he was thrusting madly into his omega, his knot already swelling.

"Iruka, I'm close, so close..." He could feel Iruka wrap his legs around his waist, pulling him down deep. He leaned forward, plunging in as deep as he could, which also allowed him to lean down and smell Iruka's neck.

"Fuck, you smell so good, you smell so good. I'm so close, I'm going to fill you with my cum, with my child. Iruka, I'm going to get you pregnant."

Iruka who had been moaning and biting his own hand this whole time tensed and came at Kakashi's words, his insides clutching Kakashi's cock tightly as Iruka came.

"Fuck, fuck, fuck..." Kakashi thrust down hard, and started to grind his knot deep into Iruka, feeling it swelling fast. Within seconds he was tied to his mate, and it was the last thing he needed. He could feel the orgasm start, and the pleasure was so strong that he saw white flashing before his eyes. Over and over it felt like his orgasm was starting again, and his cock pumped his cum deep into his mate, over and over it felt like he would faint, like he couldn't breathe.

Iruka couldn't focus, couldn't think, couldn't do more than moan. From the moment Kakashi had started to touch his body, his senses had gone into overdrive. He thought it couldn't get any more overwhelming than it was, not until Kakashi had entered him with his cock. His instincts went haywire, every movement was nothing but pleasure. And finally, in the end, when Kakashi had knotted him and started to cum inside of him, he threw his head back and screamed loudly. Every muscle in his body was spasming, his insides were on fire, and all he could think about, all he could focus on at all, was Kakashi filling him with cum.

When they both started to come down from the high, they laid in a sweaty, messy heap, panting loudly. It took several minutes before Kakashi could lean back on one of his arms, looking down on Iruka. Inside his head, Iruka tried to remind himself that it could take a year or so before he conceived a child, but at the same time, right then, inside of him he could feel a small cramp, like a needle prick and a weird cramp like pull on the left side of his lower abdomen. He paused and tried to figure out what he was feeling, but within seconds Kakashi's eyes became zombie like, and he once again started to thrust into his mate, rubbing his cock back and forth inside.

Iruka yelped, and tried to push Kakashi's shoulder.

"Kakashi, wait, just..." He gasped as Kakashi licked his neck and Iruka groaned when their mating mark tingled with pleasure.

"You smell so good Iruka, god, so good, so good..." Kakashi's hands were gripping Iruka's hips hard, rolling his body into the brunette.

There was very little doubt in Iruka's mind any more, he was certain that he had just experienced his first ever ovulation, and Kakashi's instincts were hellbent on making sure that he got pregnant from it. He rolled his hips to meet with Kakashi's, and moaned loudly. This man in his arms were going to fill him and make him pregnant.

His mind went blank as he came a second time, much harder than the first, causing him to black out.

Kakashi dully noted that Iruka passed out, but he couldn't stop his hips from thrusting. The smell had changed, it was so intense now he couldn't think of anything but to fill Iruka with as much cum as possible, his instincts as an alpha taking over and demanding him to respond to the heat in full.

When Iruka came to Kakashi had already cum one more time, and was still thrusting and rolling his hips into the brunette. They kissed a deep kiss, and surrendered completely to their heat wave, letting instinct take over completely.


Tbc.