Archive of Our Own ^beta

"Happy Birthday, babe!" Kazuichi shouted as Gundham entered the living room of their shared apartment. 

Kazuichi ambushed Gundham with a tight hug before the breeder had the chance to observe his surroundings fully. 

The kitchen was a mess.

"Uh… I tried to make you breakfast… but you know I'm not as skilled in the kitchen as I am in the garage…"

Kazuichi presented a messy plate which had a charred flat object on it. One could only assume it was intended to be a pancake. 

"Sorry, it's not great… and I'll clean the kitchen, I promise!"

"Do not worry, my paramour, I appreciate the effort you have made," Gundham said with a chuckle, noticing the crude heart shape iced on top of the pancake, as well as the handful of unevenly cut strawberries on the side of the plate. 

Kazuichi sheepishly smiled at the praise from his boyfriend, still slightly embarrassed. 

"Anyway! So as for your main present…"

Kazuichi set the plate aside before rustling around in the pockets of his shirt, pulling out a red ribbon and placing it on top of his pink head.

"It's me!" The mechanic cheered with his eyes closed. 

Gundham raised an eyebrow at Kazuichi as the cogs turned in his head, trying to understand what his boyfriend meant. 

Kazuichi's eyes shot open at the silence.

"I'm just joking! I did get you an actual gift-" Kazuichi blurted out.

"Kazuichi…" Gundham cut his boyfriend off suddenly, as if he had a light bulb moment. 

"You mean to tell me that as my birthday present… You wish to grant your entire being to me?" Gundham asked inquisitively.

"Uh… I guess. If you want. I was kinda just kidding, but…" Kazuichi said hesitantly, not really having expected Gundham to take what he meant so literally, even though he probably should have. 

"Then, as my possession, I am to do with you… whatever I desire?" The breeder said, blushing and pulling his scarf over his face, but still keeping intense eye contact with his boyfriend. 

Kazuichi's face boiled over.

"Y-Yeah, sure. W-Whatever." His attempt at nonchalance failed as he stuttered. 

"Then please accompany me to our chambers…" Gundham said, reaching out to grab Kazuichi's hand softly and then turning around with his scarf billowing behind him. 

"O-Okay!" Kazuchi followed the breeder, feeling a mixture of nervousness and excitement as he thought about what his boyfriend was planning.

Gundham let go of Kazuichi's hand when they entered the bedroom, heading straight to his chest of drawers.

Kazuichi closed the door behind them gently, then stood in the corner of the room curiously while he watched his boyfriend. 

Gundham was searching methodically through the bottom drawer of the storage unit for a few seconds before pulling out a small, black box.

"Oh, that box?… I’ve been wondering what you keep locked up in there…" Kazuichi spoke, his voice cracking and involuntarily rising in pitch in anticipation. 

"So you do make an effort to rummage through my possessions when I am not present…" Gundham replied playfully as he slowly dropped to sit on his knees, eyes still fixed on the box.

"No! I uh… never mind. No point trying to make an excuse, huh?…" The mechanic surrendered.

"Pay no mind to it, my paramour, your snooping nature is the purpose of the sealing incantation I cast on the chest."

Kazuichi crooned his head curiously and stepped a little closer to his boyfriend to observe the black box.

Gundham swiftly entered a four-digit code that Kazuichi tried to make note of, but the breeder was too fast, catching him completely off guard when Gundham suddenly opened the lid. 

Kazuichi's jaw dropped at what he saw sitting in the box.

The items were pulled out one by one by the breeder, who innocently placed them on his bed in a neat row:

A pair of pink fluffy dog ears.

A black collar with a heart-shaped tag.

And lastly…

…A matching pink fluffy tail that was attached to the end of a butt plug. 

Kazuichi was speechless, too stunned to pick up his jaw that had dropped to the floor. 

Of course, Kazuichi knew that Gundham was a breeder, but he never expected him to be into pet play. After all, it had never come up in their sex lives before.

After Gundham had finished placing the last item down on his bed, he looked at his boyfriend almost pleadingly, his head refusing to follow his eyes. 

"D-Do you want me to…?" Kazuichi managed to speak.

"Adorn them?… Yes." Gundham said shyly, pulling his scarf over his red face once again, and shifting his body weight nervously with his knees. 

"How long have you…?" Kazuichi trailed off, his eyes dancing between each of the items on the bed. 

"I purchased these artefacts a few moons ago… I was waiting for an appropriate moment to… request this of you."

Gundham was kinky. Kazuichi didn't know Gundham was kinky until now. And he couldn't help but admit that he was into it. It was hot. Really hot. It was like Gundham was finally comfortable enough to share this side of him. The Gundham DLC, in a way.

Kazuichi was sweating. His legs were shaking in excitement. He was getting hard. 

He tried to casually walk over to where Gundham was kneeling, but failed, instead kind of stumbling, and weakly dropping to his knees as soon as he was in front of him.

"Will you indulge me, my paramour?" Gundham asked softly.

"Well, it is your birthday, so…" Kazuichi said, averting his eyes from the breeder, too nervous to look him in the eye. 

"I love you, Kazuichi…" The breeder gasped, cupping his boyfriend's face.

The couple shared a short but affectionate kiss on the lips before Gundham pulled off Kazuichi's shirt.

The breeder kissed up the mechanic's neck, then placed gentle pecks on his pink nipples and poked out his tongue to lick them. 

"Mmmm…" Kazuichi affirmed. 

After a little while, Gundham pulled back from Kazuichi's chest to grab the first item off the bed. The black collar.

"Is this satisfactory?" Gundham asked seriously whilst unbuckling the accessory.

Kazuichi opened his eyes, breath shaking at the sight of his name in cursive, shining in the light on the tag of the collar. He simply nodded in response before closing his eyes again.

"Good boy…" Gundham cooed before fastening the accessory around his boyfriend's neck. 

Kazuichi whimpered. He never thought he would like being called a "Good boy", but apparently, he was kinky too. 

Gundham grabbed the collar and gently pulled Kazuichi up to stand with him, and then led him to lie down in the middle of the bed. 

"What's next?" Kazuchi breathed, opening his eyes to look up submissively at the breeder as he leaned over him, still holding him by the collar. 

Gundham cleared his throat nervously.

"The ears… I would like you to equip them."

Kazuichi complied, his shaky hand reaching to grab the dog ears next to him. 

Gundham watched the mechanic intently as he stretched the fluffy headband that he had custom-made to match the colour of his boyfriend's messy pink hair perfectly. 

"Well, h-how does it look?" Kazuichi asked with his hands unintentionally pawing over his face. 

"Mmmm" is all that Gundham responded before extending his arm to firmly pet Kazuichi on the top of the head. He swirled circles on the mechanics crown and over the dog ears, and then slid his hand down to the back to lightly scratch the tips of his fingers into his scalp. 

"Are you pleased by my touch?" Gundham cooed.

"Yes…" Kazuichi whimpered, melting into his boyfriend's hand. 

"You are such a good boy for your master…"

Master? Maybe if Kazuichi had heard anyone else say that, it would feel embarrassing, but somehow in Gundham's deep booming voice… it sounded sexy.

"M-Master!" Kazuichi gasped without thinking, rubbing his legs together. 

Gundham liked that. Being called master. Kazuichi could tell by how the breeder's breath hitched and pupils dilated. 

"What is it, my paramour?" Gundham asked. 

Kazuichi turned his head to look over to the remaining item on the bed, breathing heavily. 

"Be patient…" Gundham growled seductively, tugging Kazuichi gently by the collar back to face him.

"That artefact is for later."

Kazuichi gasped as Gundham removed his hand from his head to pull down the boxers that the mechanic was wearing to reveal his hard cock, which bounced from being flicked by the waistband. 

"Hell, you are magnificent…" Gundham said breathlessly, and then wasted no time spreading his boyfriend's thighs to plunge his head between them. 

Kazuichi yelped as Gundham teased his entrance with his tongue, rimming it before pushing inside. 

"Gundham!" Kazuichi moaned. 

The breeder pushed in deeper as he was egged on, stimulating his boyfriend's prostate.

"G-Gundham!" Kazuichi cried again, louder.

"If you carry on like that… we're not even gonna get to use that toy!"

Gundham retreated his tongue slowly, pulling away from Kazuichi's hole whilst chuckling a little. The vibrations made the mechanic shiver. 

"Apologies. Your essence is quite… irresistible." Gundham flirted, licking his lips.

Kazuichi exhaled a shaky laugh as well.

Kazuichi gulped as he saw Gundham finally reach for the plug, teasing the soft tail as he brought it towards him, stroking the pink fibres between his fingertips. 

"Are you sure you are adequately prepared, my paramour?"

"Yeah… put it in already." Kazuichi breathed, unable to take his eyes off the plug.

With the consent he needed, Gundham lined the plug up with Kazuichi's entrance and pushed it all the way inside of him, leaving only the fluffy end sticking out.

Kazuichi moaned.

Gundham was dead silent.

"D-Do you like it?" Kazuichi stuttered, nervously looking at his boyfriend's face for approval. 

His eyes met with an awestruck, hungry expression staring down at his body. It was intimidating for sure, like Gundham was devouring him with his gaze alone, but it was hot.

"Like it…?" Gundham whispered, his vocal chords failing him. 

"That lowly word does not serve you justice..."

"Seeing you like this-"

Gundham impatiently cut himself off by quickly grabbing Kazuichi by the shoulders and flipping him over onto his stomach.

Kazuichi yelped in surprise. 

"Heavens..." Gundham said like a curse under his breath, observing the tail protruding from his boyfriend's cheeks, his hands trailing up the bare sides of his body as he did.

He stopped his touch at Kazuichi's shoulders before grabbing his underarms, then gently pulled him up and back to lean against his body.

"Kazuichi…" Gundham growled as he grabbed and stroked the mechanic's hard member, animalistic lust in his voice.

"Y-Yes, master?" Kazuichi moaned at the joint stimulation of his cock, and his prostate as the mattress pushed the plug deeper into his ass. 

"Have you… emptied your bladder this morning?"

Kazuichi's mind went blank for a second.

"M-My bladder…? Are you asking if I have pissed yet?"

"Mhmm." The breeder hummed, burying his head into his boyfriend's right shoulder.

"Hahhh… No… I haven't…?" Kazuichi replied, fighting back a moan as Gundham continued stroking, for some reason, he was feeling more turned on than before. 

"Good boy…" Gundham exhaled excitedly. 

"W-What?! What has that got to do with anything?" 

"I want you to relieve yourself for me…" The breeder said seductively, kissing his boyfriend's neck.

"What? But… hah… we're kinda in the middle of something?!" Kazuichi said breathlessly, Gundham wasn't giving him any mercy.

"No… I want you to… in my embrace"

"W-What?" Kazuichi yelped.

Gundham wasn't just kinky, he was KINKY. But Kazuichi couldn't deny that he was enjoying it… so maybe he was KINKY as well…

"Please, Kazuichi…" Gundham begged deeply in his boyfriend's ear.

Gundham moved his hand off Kazuichi's cock to start stimulating his perineum instead.

"W-Wait, stop… that feels weird!" Kazuichi protested, his body jumping involuntarily.

"Please do not resist… relax yourself." Gundham cooed.

Kazuichi was shocked that whatever breeder magic Gundham was doing was working; he suddenly had the overwhelming urge to piss. 

"Fuck no, Gundham… Ah~" Kazuichi moaned and gripped the bed sheets as Gundham moved his hand back to the mechanic's cock.

"This isn't fair!" Kazuichi cried out.

But it was futile, with Gundham's hand on his cock and the plug pushing against his prostate, Kazuichi couldn't resist anymore, he was moaning out Gundham's name whilst cumming and then pissing, semen and then urine shooting out of his cock respectively onto their bed.

"Shit…" Kazuichi whimpered post orgasm, his body resting heavily onto the body behind him, his chest heaving. 

He felt the vibrations on his neck as Gundham chuckled.

"You bastard! What are you laughing at… Our sheets are ruined." Kazuichi whined. 

"Keheheheh… Perhaps this mortal linen is soiled, but that annoyance is only momentary. On the contrary, this event has fulfilled two of my greatest lustful desires, and will be an occurrence I will reminisce on even when I return to the depths of hell." Gundham boomed confidently, fingers brushing the tips of the fake fluffy ears that Kazuichi was still wearing. 

"Wait… did you even fucking come?! This was supposed to be your birthday gift!" Kazuichi yelled with miraculous recovery, looking up at his boyfriend in shock. 

"Your pleasure is mine, my dark prince… but if it remains a burden on your soul, please rest assured that I was also able to… reach completion." Gundham blushed, his usual dark lord bravado faltering slightly.

Kazuichi's eyes darted down to Gundham's still clothed crotch, and his breath hitched at the prominent wet patch on his boyfriend's trousers. 

"Jeez, you're kinky, babe. Don't know how ya hid it for so long."

"The supreme overlord of ice, Gundham Tanaka, has many such secrets, my paramour. I look forward to disclosing more of them with you in the future. I trust that you possess the power to awaken them!" Gundham spoke, voice returning to its usual intonation. 

Kazuichi laughed. 

"Why wait for the future? It's still your birthday, after all…"