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Hey Google, What To Do When Your Boyfriend's Wolf Fursona Goes Into Rut?

Summary:

Fulgur didn't fully realize how much baggage came with letting the Duke of Discipline live with him until he woke up with a lapful of horny wolf man.

AKA Doom goes into rut, Fulgur decides to endulge.

Notes:

Hiii, guess who got horny brainrot after watching fulgur's 3.0 and came to write fanfic? :D

I needed this man knotted and on my desk pronto, and if I have to do it myself then so be it!

Hopefully you enjoy my 3am sex ramblings! <3

P.S. probably overtagged but eh better safe than sorry I think?

(See the end of the work for more notes.)

Work Text:

Fulgur stirred in his sleep as a heavy weight settled on top of him. It wasn’t anything he wasn’t used to, so he was about to drift off again when something wet dragged across his cheek.

 

“Mm… Pio, stop…” He sleepily pushed at the oversized man sitting on his legs. Doppio didn’t respond, only moving to lick and kiss at Fulgur’s jaw.

 

The feeling of cooling saliva on him finally roused him from his slumber. Fulgur blinked and reached for his glasses on the nightstand to get a better look at Doppio.

 

It turned out not to be Doppio. It was Doom if the ears and tail were anything to go by.

 

“Fuuchan…” Doom whispered in that deliciously deep tone. His hands roamed down the cyborg’s torso, then stopped to grab at his hips. “I need you… I can’t take it anymore…”

 

Oh… So this was what Pio was talking about.

 

Fulgur recalled the conversation Doppio had pulled him aside for a few days prior. He had told him that Doom was going to be a bit more “primal” during the next week. He’d thought that Doppio just meant that he’d be howling at the moon or something, since there was a full moon coming up.

 

This was something entirely different though. He wished Doppio had been more specific.

 

“Doom, it’s way too early for this…” Fulgur pushed at him more insistently, finally getting Doom to back up. “At least let me have some coffee first.”

 

“I can’t wait that long! I need you now!” Doom insisted with a growl, only to immediately shut up when Fulgur fixed him with a glare. The older man snapped his fingers and pointed off the left side of the bed.

 

“On the floor. Now.”

 

Doom surprised even himself with the speed at which he complied. He was on the floor in less than a second, his hands clutching at the carpet to help keep himself still.

 

Fulgur stretched and sat on the edge of the bed. “Good. At least you still remember your training.” He leaned down and grabbed Doom by the chin. “I’m going to let your little slip-up slide, but you better behave for the rest of the day. Got it?”

 

“Y-Yes, Fuuchan…” Doom replied quietly. He did look remorseful of his actions, but it was obvious that he was struggling to fight off the desire wreaking havoc on his body.

 

Fulgur observed the reaper for a moment, taking in how his breath came out in hot puffs of steam and how the sweatpants he wore were tented and heavily stained around the crotch area. As fun as it would be to tease him, he figured that he shouldn’t try to push Doom too far while he was in this state.

 

“Crawl to the kitchen and wait for me there. Can you do that, puppy?” He asked. Doom nodded.

 

He watched Doom crawl out of the room before sighing and heading to the bathroom, figuring that he should prepare while Doom was still capable of rationality.

 

When he finally went into the kitchen (having purposefully taken his time showering) he found Doom in a much more frenzied state.

 

His pants had been discarded and he was furiously pumping his cock. It looked like he’d been at it for a while, but Fulgur didn’t see any cum anywhere. Poor thing…

 

Doom’s attention immediately shifted to Fulgur when he entered the room. He growled hungrily at the sight of the naked and slightly damp cyborg, digging his nails into his own thigh to stop himself from jumping the man. Fulgur smiled and moved towards the counter with the coffee maker on it.

 

“Put your leash on for me.” He ordered as he brought out some ground coffee. Doom nodded and reached for one of the kitchen drawers. He pulled out a black studded leash and collar, a gift that Fulgur had gotten him around the time Doppio had first moved in with him. It was a joke gift at first, but over time it proved to be very useful.

 

He secured it on his neck and handed the end of the leash to Fulgur, who hummed in approval.

 

Fulgur poured the ground coffee into the machine, checked that there was water in it, and pressed the on button. He slid his favorite mug under the spout as the machine whirred to life.

 

He tugged the leash, pulling Doom closer to him. Fulgur rested his arms on the counter and stuck his ass out, swaying his hips a bit when he saw Doom staring.

 

“Think you could loosen me up, puppy?”

 

Instead of answering, Doom moved behind Fulgur and kissed all over the man’s butt. Fulgur chuckled at the attention, fully relaxing his upper half against the counter.

 

Doom kissed the pale skin for a few more seconds before moving on to his prize. His large tongue lulled out of his mouth and lapped at the older man’s hole, drenching it in saliva. Fulgur groaned and let his forehead hit the counter as he pushed his ass back.

 

The reaper’s tongue easily wormed its way into him. It swirled around inside him as Doom took hold of his shaking thighs. Feeling how big and skilled Doom’s tongue was always left Fulgur reeling in the best ways, and had the bonus of Doom never really needing to stretch him with his fingers. That was especially needed now, since Fulgur noticed that Doom’s dick had seemingly changed overnight.

 

What was normally just Doppio’s cock was now a big and angry red canine cock, complete with a knot and a sheath that was stretched around it. The older man had felt a pang of longing inside him when he first saw it. This was the closest he’d ever get to banging a werewolf and to say he was excited would be a huge fucking understatement.

 

After a while Doom pulled away from Fulgur’s ass, the wet sound from the separation making the cyborg’s dick twitch. He probably looked like an absolute mess back there…

 

Doom’s frame towered over Fulgur. He dragged his hands up from his thighs to his hips, holding them in a tight grip as he slid his cock up the valley of Fulgur’s ass. He leaned down to rest his chin on his shoulder.

 

“Fuuchan… Please…” His breath was hot against Fulgur’s ear. Unnaturally hot.

 

Fulgur looked at the coffee maker. The coffee was pouring into the cup. It’d most likely be finished in a minute or two, but it did need to cool, so…

 

“Go ahead, puppy.”

 

Fulgur immediately choked on his breath as Doom’s cock pressed against his rim until it finally popped inside. Fuck, that felt way bigger than Fulgur thought it would.

 

He wrapped the leash he was miraculously still holding around his wrist and pulled it forward, causing Doom to follow and push his dick deeper inside. Both men moaned as Doom’s knot settled against Fulgur’s ass.

 

No time was given for Fulgur to adjust, or even take another breath. Doom slowly pulled out, tightened his grip on the cyborg’s hips, then slammed right back in. His pace only sped up more and more with every thrust forward. Any thoughts Fulgur had of telling Doom to slow down were silenced when the oversized wolf let out a loud and possessive growl.

 

Mine… My mate…” The animalistic tinge in the man’s voice made Fulgur shiver. 

 

“Oh, fuck…” He moaned out as he pushed back against Doom, though being fucked by a beast didn’t exactly leave him with much thought to properly coordinate his movements. “G-Good puppy! I’m all yours, fuck!”

 

Fulgur felt Doom’s teeth sink into his shoulder but barely registered it, and didn't even notice the blood dripping down from the bite due to how far gone he was. He could already feel his cheeks beginning to sore from how hard Doom was pounding into him and his mind was melting into a puddle of ecstasy from all the intense sensations. The only thing keeping him grounded was his grip on the leash, which he had pulled taunt unconsciously to keep Doom from going anywhere.

 

Doom moved his hands to grip Fulgur’s upper arms and pull him back fully onto his dick, which elicited a broken moan from the older man. Doom kept pulling and pressing forward until his knot joined his cock inside of Fulgur.

 

Fulgur’s eyes rolled back into his head as Doom began rutting into him, the knot pressing and rubbing hard on his prostate.

 

“D-Dooom… Guhh, f-fuuuuck…” His body twitched in the reaper’s grasp as his cock erupted onto the floor beneath them. Doom reached down and stroked him through his orgasm.

 

“Fuuchan… Me too… I’m gonna…!” Doom wrapped his arms around Fulgur’s torso and held him down. He let out a choked sound that was somewhere between a bark and a growl as he flooded Fulgur’s insides with cum. Thanks to the knot, all of it was held inside and the cyborg could feel his belly beginning to swell from the sheer amount of it. Fulgur let out a low moan as the weight settled in his stomach. He might as well have been pregnant by the time Doom was done.

 

The two stood there, the only sounds in the kitchen being their labored breathing and the occasional drip from the coffee maker. Doom held onto Fulgur to prevent him from falling over, given that his legs had completely given up on him.

 

“Hand… Hand me my coffee, please…” Fulgur breathed out. Doom grabbed the full mug and, instead of handing it to him, pressed it against Fulgur’s lips, letting the man drink from it until it was empty. The coffee was cold but it was better than nothing.

 

“You look so cute like this, Fuuchan…” Doom commented as he placed the mug down.

 

“Of course you’d think that, you horny dog…” Fulgur sighed, then weakly swiped the stray strands of hair from his face. “How long are we tied together?”

 

“30 minutes at most. We could probably test it before then though, don’t worry.” Doom said.

 

The reaper blindly backed up and grabbed a chair to plop down in. Fulgur choked as Doom’s cock pressed into him even more from the movement.

 

“Shit! Uhn… My ass is gonna suffer later...”  Fulgur rested against Doom’s chest, letting him caress his cum-swollen belly.

 

“I’ll take care of you, Fuuchan! You take such good care of us, it’s only fair, right?”

 

“Mmm… You’re such a good puppy, Doom.” He scratched the reaper’s chin, chuckling when his tail wagged so hard it thumped against the chair.

 

As they cuddled, he thought about how Doppio said that this would last the rest of the week. He wasn’t sure how he was gonna survive getting his brains fucked out for a couple days straight, but if it ended like this then perhaps it wouldn’t be so bad after all…

Notes:

Archivist as a freaky old man is such good food in my eyes, just delicious <3

Anyway, hope you enjoyed and thanks for reading!