Mayuri Kurotsuchi Headcannons

Mayuri Kurotsuchi Headcannons

A/N: Thie fic itself is going to take a while (Uni started up again and I am Suffering) so to feed yall before the self-indulgent smut im going to write, here's some SFW and NSFW headcannons. NSFW (and NSFW contents + warnings) is below the cut!

Mayuri Kurotsuchi x Gn!Reader (but Fem!Reader mentioned for NSFW)

Warnings: Smut, general Mayuri insanity, Slight Yandere themes, mentions of minor surgery, goofy silly moods

SFW:

You and Mayuri tend to have a very argumentative relationship once you've been dating for a few years

In the beginning, he was very possessive but also distant

He was very in denial that he felt anything, but he opened up after a while

You two have lots of arguments over morals and people

He believes that as long as you're safe, everything is fine

You're just trying to tell him that yes, you're safe. But the damned shinigami noble on the table getting a second heart because they paid for a years worth of funding is definitely not at that particular moment.

Hes often rude and blunt, but he means it in a good way. He'll often sound disinterested, but if you ask him about what you were talking about, he'll repeat it word for word and ask if you're going to continue or if he can keep working.

His version of being sweet is showing you his Lans and creations, but keeping you close my his side, his long nail always touching you if he needs to move forward or a little further away to show you something

Has definitely tried to show you how to dissect something odd, like another shinigami he picked up stole from the 4th Division. Needless to say, a fight broke out between you two, which ended with a scalpel and Akon both being thrown.

He also likes to have you sit on his lap while he's working.

Did he make a chair that he can sit in comfortably while you sit on his lap? Yes.

Does this chair have more comfort than any other chair in the 11th Division? Also yes.

Hes quite big on quality time you see, mixed with physical affection

Though some days, when he's more on edge than others, he'll opt to keep you in sight, but doesn't want to be touching you.

Like cuddling with you at night, when he can be bothered to sleep.

When he is very busy and can't make it to bed, he'll send Nemu with his regrets. He'd prefer to go himself, but it's far too busy.

He has contemplated installing a lavish, closed off, private, quadruple password locked room for you in his lab, just so he can see you easier, but he felt it may be too dangerous for you

He also enjoys seeing you chat with Nemu, though he does reprimand her if she gets too 'free' with you. Nemu is just happy her master is happy.

Nemu treats you like a mother. Yes I believe that Mayuri and Nemu are father daughter and not husband and wife come @ me. She enjoys going on "surveillance trips" with you (AKA walks around the Seireitei)

Moving on to nicknames and pet names, he doesn't really use them, but he does have clear favorites when he's in the mood. Baby and my dear are his go-tos if he feels mushy, but sweeting and rabbit are for his muh softer moments. He likes using rabbit as a teasing word. Not bunny, rabbit. He doesn't like bunnies.

He likes making sure you have things to do if you want to spend time alone, or if he's too busy.

His Captain's salary used to fully go towards funding the lab, but buying you things you want is also a good use of his money.

Hes never overstepped that particular boundary of excessive buying, though, especially if you're money conscious (all my people raised poor wya!)

Being with Mayuri is generally just an odd, but fun, if a little strained, time.

Tiny drabble:

It was cold today. You were bundled up as warmly as possible, attempting to not freeze before you go to Mayuri. You'd hoped to see him last night, you even stayed up far past your usual time, but Nemu poked her head around the corner and said that he'd regretfully be spending the night in the lab. You were welcome to join him, though.

You declined. It's been getting much colder, so you stayed in bed.

Now you wished you hadn't. You're tired and cold. A few Division members say hellos to you as you walk, and when you finally reach the lan, you see Mayuri in his chair, hunched over the console, looking at data.

"Nice of you to join me. Come, sit, now." He waved you over, not taking his eyes off the console. When you pause to wrap yourself up a little more, you hear the clacking of his fingers on the keys stop. "Sweeting, come here."

You forget about how cold you are and hurry on over. He's already leaning back in his seat, his hands away from his console, his brow irritated that he has to wait for you. You slide into his lap, and the smart chair registers that you're there. Another back pops up behind you, soft and squishy. But you opt to snuggle into Mayuri. His headpiece is a little annoying, but it's more endearing knowing you've seen what's underneath. That handsome face, alongside the soft lips that aren't covered with paint. He is finally able to get back to work, not saying another word.

That is, until he notices how many layers you're wearing.

"This lab has the best technology in the entire Soul Society, underfloor heating, and is warmed precisely so nobody is every distracted by the cold. If you're feverish or sick, go back to my room. I will provide you with warmth and a cure-all for your sickness." He doesn't look zt you just yet.

He feels a little insecure. How would you get sick? Is he not doing enough to keep you safe and healthy? Does he need to strengthen your immune system so he can spend more hours like this with you?

"I'm just a little cold, that's all." You reply gently. "There's nothing wrong with it. I'm not sick." Your reassurances did nothing to persuade him, but he supposed he could at least keep an eye on you while you're with him. At least you're with him. If you weren't, he have to take drastic measures to make sure you were. Nobody else was going to have you, that was for sure.

"Hmph. Fine." His clacking increased in speed. You closed your eyes, ready to finally cure the tired part of you, when you heard the clacking stop again and fabric wrap around you.

You opened your eyes to find he's wrapped his Captain's cloack around you, pulling you closer to him while also keeping you warm. The combination of his body heat the warmth of the cloak, and the renewed rhythmic tapping of his fingers on the keyboard fixed all your ills. The cold and your tiredness ebbed as you fell asleep in his arms, nestles close to him.

Despite the fact he was still working, he cursed you fot breaking his concentration. You were a little pest sometimes.

But at least you were his pest. He'd been working all night, after all... having you asleep with him, providing hum some much deserved affection as a reward for his hard work was worth it. After all, he was the most intelligent man in the Soul Society. He deserved to have a beautiful woman on his arm, in his arms, providing him with pesky emotions he didn't exactly not like, but rather enjoyed. He especially liked the strange fuzzy feeling he gets whenever he sees your peaceful sleeping face. What was that feeling called again?

NSFW:

a/n tried to keep it as gn!reader as possible, but there is ONE mention of a womb and pregnancy. (I fully believe Mayuri would give a biological male a working uterus and womb just to get them pregnant though)

WARNINGS: Sex toys, marking, nipple play, slight exhibitionism, breeding kink, degrading, power play, mentions of branding, mentions of knifeplay, semi-public sex, creampies, mentions of cock, womb mention/s (f!reader), masturbation, implied yandere in drabble

So, he likes toys.

Hes even made them for you.

Vibrating dildos in the shape of his cock to keep you coming while he's not there.

Vibrating panties that are so silent you can't hear it when you're right next to them.

A little toy kind of like the rose toy, except it's unsettlingly like his actual tongue

Needless to say, he's got you covered while he's away

When he's with you?

RIP.

Throwing it out there: he's a scientist. He's made his dick bigger. We've all seen how he carries Ashisogi Jizo. BDE.

So: 8.5 inches (cut, he likes to be clean) he keeps it unpainted (most of the time) and his balls are clean shaven, having slightly low. Good girth on him, enough to be somewhat of a stretch but not unpleasant. Really good hygiene down below too.

Anyway, he likes to study your reactions

The first few time you had sex, all he did was watch you. He even took notes.

You can't find the notes he took but you're sure that if you can't, nobody else but he can.

He's memorized your weakest, spongy spots

knows you live having your nipples sucked and licked and gently pulled.

those first few times were just you orgasming over and over and over again

loves biting. Marking is a big thing for him, as it shows that you belong to him.

Doesng like to mark with you cum though, as he feels it's a waste

Breeding kink? No

Hatred of wasting perfectly good seed with the potential to grow a genius nearly at his level within your womb? ✨️yes✨️

Is a more dominant man in bed, though likes to power bottom if you really want to ride.

The few times he's properly subbed for you, he didn't mind it, but he'd rather not

You made your sexual boundaries clear, but he's always asked permission to test them. A small brand he healed and got rid of here, a few interesting nights with knifeplay there...

Mayuri may be off the rails, but he'd do anything to keep you by his side. He knows your boundaries, and he knows his.

Moving on, he loves to degrade you.

Filthy slut, naughty whore, stupid bitch, and little cumdumpster seem to be his favorites

He loves the risk of being caught, as he loves the risk of you being humiliated

But he always makes sure you're never caught.

You'd be in an alley way, his cock thrusting in and out like a piston, one leg hoisted into the air, the cold air hitting your most sensitive part while he uses you like a toy, his other hand gripped firmly under your chin to tilt your head back to look at him.

You're dripping everywhere, the sounds of his dick going in and out of you something so lewd and pornographic you can't even contain your moans.

"You'd like to be caught, wouldn't you, you little whore? Go on, cum then, give the men who will walk past something to lick up and stare at."

When you cum, he shoves two fingers in your mouth, causing you to choke a little. He doesn't stop his hips, but you can feel your eyes rolling as he keeps abusing that sweet, sensitive spot inside you

Without warning, he's all the way in, his tongue running down your neck to bite the junction between your shoulder and neck as he cums deeply inside you.

Theres always a lot of it, to the point where it's almost like hes got years worth just stored there (even though your sex life is somewhat regular)

Oh yeah. I don't think Mayuri has a high sex drive, per se, I just think he likes to be close with you. Any chance he gets, he's like to be spending quality time with you and touching you in some way, and sex is quite good for that.

aftercare is pretty odd tbh

"You did better than I thought you would."

he generally likes to hold you close, and uses his captains hoari to wipe you down, if you want to be wiped down.

not many kisses, but he'll talk about the most insane things (i.e, how exciting it would be to study Ichigo Kurosaki, how annoying Captain Shunsui is, nitpicking over Akons work in the lab) quietly to help you get to sleep

once you're asleep, that's when the real aftercare starts

If your an afab, as much as he hates wasting it, he gives you a little injection to prevent his seed from taking hold in your womb

because of course, he's modified his semen to bypass any and all forms of birth control

after that, he cleans himself up, becayse he actually hates feeling sticky (as fun as it all was, that's one of his few icks when it comes to sex) he gets all the cum, the bodypaint, the sweat, and blood (if there is any) off before going back to bed

lastly, he'd make sure the bed was comfortable enough for him to settle down into, and he cuddles with you for as long as he can before either morning comes or he has to go back to work

he likes to cage you to him while you sleep, making sure you really can't escape

Tiny nsfw drabble:

His mouth devoured yours, much like how a lion would devour it's first meal in days. In the tiny corner of the lab, a hidden room long covered over but with no dust on any surface- he must have planned this, you think -he presses you against the wall, kissing you with such passion yet such possessiveness, you wonder if this is how the moon feels knowing the sun chases her. Knowing such heat is so close, yet only the sun can demand when you shine from it.

Everything in your mind turned into mush as he shoved you further against the wall, the pommel of Ashisogi Jizo pressing into your stomach, pushed a little further out than normal from his hard cock, still confined into his pants.

You tried. You really did. You knew his rule -"No touching until I tell you," -but it was so hard to abide by when you hadn't had him in over a week. It had been so busy, what with his newest big project...

So your hands moved to the front of his hakama, gently cupping his growing bulge through the fabric. You were rewarded so kindly for your disobedience, with a low growl from him and a hand flying to your throat to stop you from moving anymore, but the gentle grinding of his clothed cock against your hand. His lips nipped at yours and when you opened your mouth to gasp, he slipped his tongue inside, Ashisogi Jizo pressing painfully into your stomach as he leaned his entire body against you, quite desperate now to relieve himself of how hard he was. When he took his hand away from your neck, for a brief moment you had perfect clarity, and realized he wasn't going to punish you today.

Mayuri needed you. Over a week of yearning, battling himself and working so hard for his projects costs and hard work to pay off, he deserved to just stop talking. He deserved to not have to speak, to not say any words or make any sound. He just needed you.

The air was hot as you two writhed. His needs were coming and coming fast, much before yours, but when he dipped his head to bite and suck on your neck, his headpiece digging into your jaw, if felt as if you were about to orgasm just from that.

His hands were rough, pawing at your waist and ass, as if he could tear off your clothes and skin and get to the bones underneath, and make messy, bloody, raw love to your insides. Mayuri was a mess, to the point where he himself, who prided himself on his sharp mind and ability to be clear-headed through anything, began just desperately thrusting his clothes cock into your hand.

Your moans and little gasps when he kept attacking your neck with his lips and teeth, his body pain leaving marks of his lips all over your skin, but not marks like he loves to give, bruises formed by his lips that both adored and condemned you. Lips that lied and manipulated and coerced you into staying once, lips that now tried to make up for all lost time.

As soon as Mayuri found that sensitive spot on your neck- he didn't go straight for it this time, odd... -you scrambled wit your hands to pull down his hakama pants and grabbed ahold of his bare cock. The fleshy hardness of it, the girth, and the length... you couldn't do it alone, but he would help you out. He groaned into you neck, the second sound he's made since he dragged you into this small, abandoned room, pleased with you. He began thrusting, sloppily, into your hands, as you tilted your head back as he kept on kissing and marking your neck. One of his hands moved to paw at your chest, blindly reaching into your shihakusho to toy with one of your nipples as his tongue lapped at your neck.

You're breathy moans and whines, mixed alongside his occasional grunts, echoed in the room, and despite the locked door, he selfishly wished he'd dragged you anywhere else, just so nobody would hear you but him.

At the reminder to himself that you were his, his alone, and his until he chose to discard you (which he would never do), he grunts then exhales from the back of his throat, his cum coating your hands. He slowed his thrusts down, he stopped kissing your neck so hungrily, and he withdrew his hand from the inside of your shihakusho. His breathing was heavy still, and he looked at you with half lidded eyes filled with fire.

You felt a pull in your gut as his cock, which had been softening ever so slightly, hardened again. Mayuri kissed your neck softly, featherlight, before pulling his head back, but he didn't move his hips, or try to escape the grasp your hands had on his dick.

"You're not going to waste the next few, are you, my dear?" His voice is husky, raw with emotion. The look in his eyes reminds you of a man starved, a softly boiling rage born from need of something just beyond his reach. Mayuri leans forward to brush his lips against yours, his long nail on his right hand slowly tracing down the front of your disheveled shihakusho, opening it for his eyes and his eyes only. To see your skin, unmarred for over a week, displayed before him...

"I won't."

Your voice breaks him from his thoughts, and his gaze flicks to yours again. He grins, a predator, a man who will take what he needs to soothe his hunger.

"Good. On your knees then, and don't be wasteful."