Archive of Our Own ^beta

“Are you sure?” 

Hiiragi thinks that Shizu must have asked him that question hundreds of times over the last few months. 

There was the first time, after Hiiragi’s last heat, when Hiiragi had first brought up the idea. There was the time at the doctor’s appointment, and the time when they looked at bigger apartments. There was the time when they talked to Mafuyu and Uenoyama about it. And there were the dozens and dozens of times in between each of those moments. 

And there’s now, just as Hiiragi’s heat is beginning. 

“Are you sure, Hiiragi?” Shizu asks again from where he’s standing at the foot of their bed. “Because we can wait. It doesn’t have to be now. We could—”

And like every other time Shizu has asked and started to ramble, Hiiragi cuts him off to say, “I’m sure.”

Because he is. 

He’s been sure about Shizu since they were just kids. That’s why he let Shizu bite him on their first heat together, even though everyone around them thought they were being premature. But Hiiragi knew. It was Shizu. It was always going to be Shizu. And if that was the case, why wait?

And now…

Now he’s ready for the next part. 

Hiiragi sits up on his knees on the bed. Even like this, Shizu towers over him, and Hiiragi kind of likes that fact. He likes his big, tall alpha. Instincts, he knows. But he likes it, nonetheless. 

Teasingly, Hiiragi places his hands on Shizu’s abs before running them up his chest and settling them on either side of his throat. Shizu leans down so it’s easier for Hiiragi to reach him, and from there, his scent is so strong and intoxicating that Hiiragi’s head begins to swim. His heat is starting to really hit now, and the time for conversation is nearing an end. He needs to say what he needs to say, and he needs Shizu to believe him. 

“I want you to breed me, Shizusumi,” Hiiragi whispers. 

A whine bursts free from Shizu’s lips, his eyes rolling back before squeezing closed. 

Hiiragi has said those words before, in the countless times they've discussed the matter since Hiiragi’s last heat. But before, there'd always been a clinical-ness to it. The desire was there, of course, but it was more logical. They’re adults, they've been bonded for years, and it’s time to start a family. And breeding is just part of that. 

But now, Hiiragi is flooded with heat hormones, and Shizu’s body is responding to that fact. So Hiiragi knows that saying things like I want you to breed me followed by Shizusumi is probably enough to make Shizu go feral. 

Which is perfect, because that's exactly what Hiiragi wants. 

Eyes still scrunched closed, Shizu takes a sharp inhale. “I need you to be really, really sure, love. Because once we start doing this, I'm—”

“Yeah, yeah, you're not going to be able to stop. I get it,” Hiiragi teases. He's heard the spiel. Shizu is very dramatic. Always has been. “I want it. Fuck, baby, I want it so bad. I want you to fuck me, and knot me, and come inside of me. I want you to fill me up until it's fucking dripping out of me, and there's no doubt that I'm—”

Hiiragi doesn't even get to finish his sentence, because before he can say knocked up , Shizu is growling and pouncing forward, knocking him down into the bed. Hiiragi’s stomach jumps, a whimper leaving his lips. Every instinct in his body is shouting to roll over, to present himself, to submit to his gorgeous fucking alpha who's going to fuck him raw and without birth control and hopefully (hopefully!) get him pregnant. 

“Shizu,” he croaks out, and Shizu answers by slamming their lips together. 

Even after all these years, kissing Shizusumi has not gotten old. Hiiragi loves it just as much as he did the first time. More, even, because now, every time Shizu kisses him, it's like the claiming bite on his neck zings. Like his lips and the mark are directly connected. Every kiss reminds him that he is loved, claimed, and owned in the best possible way. 

Shizu doesn't even disconnect their lips to start ripping off Hiiragi’s clothing, and before Hiiragi knows it, he's naked on the bed with a still very fully clothed Shizu on top of him. 

Hiiragi breaks away with a gasp, tugging at Shizu’s shirt. “Off. Off. Take it off. I can't— I need—”

“Shhh, I got you,” Shizu soothes, reading Hiiragi right away. He was always good at that, but he's even better now after all the years bonded. Hiiragi breathes a sigh of relief when Shizu tugs his shirt over his head and adds it to their nest. Hiiragi has spent the last several days painstakingly building the perfect nest for this heat, but he trusts Shizu to add to it instead of messing it up, and he does, choosing the exact right spot for the new articles of clothing. 

Shizu rids himself of the rest of his clothes as well until he's just as bare as Hiiragi. He drops down, connecting their lips again and grinding his already hard cock into Hiiragi’s thigh. 

“Do you feel that?” Shizu asks, pulling away.

“Feel—”

But before Hiiragi can finish his question, Shizu's taken his hand and brought it down to wrap around the base of his cock. Where his knot is very obviously already beginning to swell. 

Hiiragi gasps, speechless. That's new. Shizu has never started producing a knot this early. 

I mean, fuck, Hiiragi thinks, I haven't even touched him yet. 

“That's what you do to me,” Shizu whispers against his lips, groaning a bit when Hiiragi squeezes. “That's what—fuck—hearing you say those things does to me.”

A fresh wave of slick gushes out of Hiiragi’s hole, a whine bursting free from his lips. “Please, baby. I—I—I need you to fuck me. I need your knot. I need your cum. I need you to breed me. Please, please, please—”

And after all these years, Shizu still loves hearing Hiiragi beg. 

“Hands and knees,” Shizu growls, and Hiiragi scrambles up and flips around so fast it’s nearly comical. He drops his head down to rest on the pillow, muffling a moan into it when Shizu spreads his cheeks and cool air hits him there. 

Shizu runs one finger over his hole. “You're so fucking wet, love. Wetter than normal even.”

Hiiragi nods furiously. It's true. He can feel himself dripping. And although it's not abnormal for him to get like this during his heats, this is on a whole new level. 

Shizu dips just the tip of his thumb into Hiiragi’s hole, and Hiiragi shivers. 

“You wanna be bred so bad, don't you?” Shizu teases, dipping his finger in a bit more. “You're just aching for it. So needy. So slutty.”

“Yes, alpha,” Hiiragi gasps out. 

Abruptly, Shizu pulls his thumb free and Hiiragi whines at the loss. 

“Just for me, though. Right, omega?”

Hiiragi nods and drools into the pillow. “Yes, alpha. Just for you. Only for you. Always.”

Shizu slaps a hand down onto the side of Hiiragi’s ass, and he yelps. 

“My slut. My good little cum slut.”

Yeah. That's what Hiiragi is. And he's not even embarrassed about it. 

Shizu sinks two fingers directly into Hiiragi’s hole, and the slide is smooth and slick. Hiiragi is so wet and loose from arousal that he barely even needs to be prepped this time. Shizu does it anyway, though, because he's kind and considerate and loving. Because he's a good alpha. The best alpha. 

After he's gotten three fingers deep in Hiiragi’s ass, Shizu pulls his hand free. Hiiragi has only a second to mourn the loss of the fullness before Shizu is lining his cock up and pushing all the way in right away, knocking all the air out of Hiiragi’s lungs. 

“Fuck!” he shouts, and Shizu slaps his ass again. 

“Yeah, good boy,” he grunts, thrusting his hips in and out. “Good omega. Good little cum slut. Yell for me.”

“Shizu—alpha—baby—” Hiiragi babbles, each word literally fucked out of him with each snap of Shizu's hips. 

“You want it?” Shizu asks, and when Hiiragi moans out a nonsensical answer, he slaps Hiiragi’s ass one more time and growls. “Say it , omega. Tell me what you want.”

Then he snakes a hand around to fist Hiiragi’s cock, and the words start streaming out of him. 

“Please, please, please, I need your knot, alpha,” he says, the words coming out so fast it’ll be a miracle if Shizu can even understand him. “I need your cum. I need you to fill me and breed me and—”

“I'm gonna breed you so good,” Shizu cuts him off. “I'm gonna fucking come inside of you so many times that you're dripping and soggy and there's no fucking chance you're not knocked up. I'm gonna fuck a baby inside you, omega.”

If Hiiragi was more level-headed, he would be impressed by the fact that Shizu—who barely mutters three words in public to anyone ever—is even capable of saying those kinds of things to him. He'd think how wonderful it is that they've grown so comfortable with each other, and confident in their sex life that they can be vocal about what they want. 

But Hiiragi is far from level-headed, and so instead of any of those eloquent, sappy thoughts, all he thinks is:

Fuckfuckfuckfuckshizufuckpleasepleaseplease.

And then he starts to feel Shizu’s knot—present this whole time—start to grow. 

As it presses firmly against his rim, Hiiragi starts to nearly scream. 

He’s never wanted anything as badly as he wants Shizu’s knot in this moment. 

Shizu drops Hiiragi's cock to instead grip both of his hips. Hard. He's pushing into Hiiragi so hard and so deep Hiiragi can feel it in his fucking stomach. He can't even care that Shizu is no longer jerking him off, because he's hitting his prostate so good and making such beautiful noises and everything is a symphony of sensations that are pushing Hiiragi right to the edge of the cliff. 

Shizu grunts, literally slamming Hiiragi back onto his cock. 

“Fuck, just take it,” he says, voice heavy and fucked-out. “Take all of it. My good boy. My good fucking omega. I'm gonna—oh fuck—I'm gonna come inside of you and you're going to be a good boy and fucking take it.”

And as Hiiragi is shouting out some string of words that he hopes conveys the message of I’m a good boy! and I can take it! Shizu slams him back harder than before, his knot swelling to its full size. Hiiragi literally feels the burst of cum inside of him, filling up insides. 

It always feels good when Shizu comes inside of him, but it's never felt like this. Because before, there's always been the knowledge in the back of his mind that no amount of this would actually get him pregnant. But now, that's gone. Now, he's off birth control and as fertile as he'll ever be, and his incredible mate is filling him up so perfectly and so good and there's no doubt in his mind that Shizu will do this over and over and fucking over again during the next few days until Hiiragi is pregnant. 

And that's the thing he wants most in the world. 

So he comes. 

Oh, Hiiragi comes. 

He screams and cries and his vision literally whites out. He barely even feels the fact that Shizu has put his hand back to stroke him through it, because it wasn't even necessary. Hiiragi just came from his ass and the knowledge that he was being bred in just the way he wanted to be. 

It takes some maneuvering, but Shizu manages to get them in a position where he's sitting back against the headboard with Hiiragi in his lap, collapsed on his chest, even with the knot still keeping them locked together. 

Shudders rack Hiiragi’s whole body as he tingles with the aftershocks of the most intense orgasm of his life, and Shizu squeezes him tight. 

“You okay, love?”

Hiiragi manages a nod. His heat hormones are subsiding a bit. They'll come back in full-force pretty soon, but he has a couple moments of lucidity here in the minutes after his body has fulfilled its purpose. 

Hiiragi picks his head up to meet Shizu’s eyes. “Do you think it worked?”

There's a pause, and then Shizu brings his hand up to stroke over Hiiragi’s cheekbone. “I don't know. I hope so.” He presses a soft kiss to Hiiragi's lips. “But if it didn't, we'll try again.”

“Again,” Hiiragi echoes. 

Shizu places his hand on Hiiragi’s stomach. “Again.”

***

They do try again. A lot of times over the next few days, and at the end of his heat, Hiiragi asks the same question:

“Do you think it worked?”

And Shizu replies the same:

“I don't know. But if it didn't, we'll try again.”

But they don't have to. Because six weeks later, Hiiragi finds himself staring down at a pregnancy test with one word on it:

Positive.