Chapter Text
"There you are, y/n, just the person I was looking for,"
You coax your head to the side, watching Dottore emerge from his private office, the vial of alternated slime condensate held between your delicate fingers. Slowly you place the vial back into its chemically controlled storage and stand up from your stool, instinctually brushing down your lab coat which had become covered in a plethora of unidentified substances.
"How can I help Doctor?" you ask calmly as he proceeds to move closer out of his office's darkness and into the laboratory's light.
"I need a test subject," he states, raising the vial level to his masked eyes.
"I believe you have exhausted most of our subjects-" you begin to ponder.
The Tsaritsa had provided Dottore with plenty of test subjects, usually Eleazar sufferers, that were willing to attempt anything to gain some relief from the condition. However, Dottore was still awaiting the results of his past experiments. Trialling a new concoction would surely sway the accuracy of his results.
"I don't believe that will be an issue, y/n," Dottore responds, taking another intimidating step forward.
"I believe you will be a suitable subject for this… trial," he continues lowering the vial down to your hands.
The vial was slightly warm within your cold fingertips. You look up to Dottore's calm demeanour, and all you can manage to decipher is a feeble smile across his face while his mask covers everything else as usual.
"What is it?" you dare to ask.
Undoubtedly asking was a fruitless endeavour, it doesn't take much effort to lie, for all you knew, the vial was an incurable poison, and Dottore simply wanted to test the speed of its effect. However, at the back of your mind, you doubted Dottore would kill off the only assistant that was able to handle his insatiable attitude toward unethical experimentation.
"A focus-inducing serum," Dottore responds candidly, interrupting your train of thought.
With a slow nod, you communicate your acceptance. But, of course, you'd be lying if you said you weren't loyal to the madman. Despite his unhinged personality, his pure genius and suspiciously inconspicuous past had always intrigued you. You had no intention of running away. Rather much, you had developed an intense ambition to discover the plethora of secrets he hid beneath his mask and experiments.
You watched Dottore turn towards his private office, "please come inside. It will be optimal for me to have access to my experimental records," he declared, continuing to head into the darkness.
Dottore's private office was everything you'd expected it to be and nothing you'd expected to be simultaneously. His desk expectantly was covered in records and paperwork. The wall opposite the desk was filled with shelves upon shelves of concoctions, each of which was neatly labelled and alphabetically ordered. A dim lamp beside a bed in the corner of the room was the only supply of light.
"Go ahead, I don't have all day," Dottore says, leaning against the desk flooded with records.
Setting aside your mistrust of Dottore, you pop the cork of the vial open and slowly bring the vial to your lips. Your eyes linger for a second on Dottore's intense focus on your movements before taking the vial to your lips and practically throwing the liquid down your throat. The liquid was warm and thick, slightly sweet but more so bitter. Your mind wanders as you try to pinpoint the ingredients and chemicals used.
"How do you feel," Dottore eagerly asks, watching you ponder over the mixture.
"Nothing of significance," you respond.
You feel relieved for a moment that perhaps Dottore's creation had failed, and you had nothing to worry about. However, the relief was short-lived as the creation began to create a burning sensation within the pit of your stomach. The sensation moved quickly, raising your body's temperature rapidly, and your breathing grew heavier. Dottore's mouth motions into a sadistic smile as he realises his creation has been a success.
Unconsciously you had removed your heavy lab coat, attempting to fight off the effects of the suspicious serum.
"Hot," you manage to articulate before you feel an intense heat and wetness produce between your legs.
Thoughts whirled around within your clouded mind. This genius serum Dottore had given you was doing anything but induce focus. In fact, it had similar effects to an aphrodisiac you had created with an alchemist long ago in Dragonspine... it was an aphrodisiac.
You feel your legs buckle and give way, and your body drops to the floor helplessly.
"This is not a focus-inducing serum, is it?" you whimper.
Dottore lowers himself to the floor, watching as you press your thighs together, desperate to fight off your undeniable, growing desire.
"It seems I may have made a mistake during the production of the serum," he whispers.
"You? Make a mistake?" you huff between heaves of oxygen.
"You know me too well, y/n," Dottore smirks.
Slowly Dottore presses a hand to your forehead, the coolness of his glove eliciting a surprised gasp. The smirk on his face remains unwavering before he retrieves a notebook and begins writing his findings.
"Go on," he speaks.
"Pleasure yourself," Dottore demands.
Your mouth gapes open as you process what he has just requested... no demanded from you. You continue to breathe heavily, slowly shuffling yourself so that your back is laid against the wall as support. You feel Dottore's gaze across your heaving body. There was no point in fighting this. Knowing Dottore, this aphrodisiac is probably the most potent aphrodisiac to exist and attempting to escape would merely cause your death. Hesitantly you pull down your suit pants, revealing your soaked panties. You shift uncomfortably, feeling your slick between your thighs. You hazily look over the Dottore, who remains unphased with his notebook in hand, awaiting your performance.
Painstakingly you spread your legs open and shift your panties to the side, revealing your sobbing heat. You take a finger and push it down on your clit, the pressure instantly sending a shock wave of heat through your body, more intense than the initial activation of the aphrodisiac. Your back arches as you rub circles over your sensitive clit, your heat instinctively producing a copious amount of slick to lubricate your finger. You whimper shamelessly as you speed up the friction on your clit before prodding a finger at your leaking hole. You insert the first finger easily, allowing a shudder to escape your mouth. Eagerly you insert a second finger thrusting the pair in and out of your now dribbling hole. You look over to Dottore, who had skewed aside his notebook and was instead intently watching you pleasure yourself.
The thought of the unhinged genius watching you in your most sinful state sent a shudder down your spine. Unconsciously you curl your buried digits and hit a bundle of sensitive nerves, sending a wave of pleasure through your body.
"Fuck," you moan out.
Your hips raise themselves as you grind against your buried fingers, practically riding yourself, and a knot begins forming in your stomach.
"Are you close?" Dottore purrs.
"So close," you mewl out, feeling your release impede.
"Stop".
Dottore finally moves from his position across the room to grab hold of your hand drenched in your slick and removes it from your heat. You cry out, tears forming at the corners of your eyes as your heat painfully pulses around nothing. Dottore slowly brings your messy hand to his mouth and encloses his mouth around the two digits that penetrated you. You feel overcome by lust as you watch him suckle on your fingers, licking the rest of your dripping essences from your hand.
"Sweeter than my hypothesis," he mumbled, watching your face contort out of desperation.
"Please,"
"Please, can I finish?" you plead.
"I suppose you've been a good test subject," he entertains, his gloved hand tightly wrapped around your own.
You half expected Dottore to throw you out of the office and expect you to finish yourself off in the laboratory, yet instead, he snaked an arm around your waist, coaxing you to straddle his lap. You bite your bottom lip, feeling a protruding bulge press against your bare heat.
"I'll help you finish, for experimental reasons, of course," he announces, wincing as you allow your weight to press down on his erection.
You couldn't help yourself from bringing your hands up to the mask that remained on his face, the urge to see what type of expression he was eliciting while you lewdly wrapped your legs around Dottore's waist, closing the little distance between each other. Your fingertips tremble as you pull the mask off his face, your clouded mind refusing to reason with the consequences of your desires. Your eyes widened in shock as you processed the face behind the ominous mask. Dottore was beautiful. A large scar running vertically across his left eye painted his pale skin, his eyes a deep crimson red, the complete opposite of his blue hair. You take your clean hand, running your fingertips down his scar, and watch his cheeks turn a faint shade of pink.
"Nobody told me you were this handsome," you mumble.
For a brief moment, Dottore's cheeks bloom with a hue of pink, his crimson eyes boring into your own. Dottore did not intend to take things this far. He simply wanted to test out an aphrodisiac prototype that he made in response to Pantalone, who had offered a ridiculous amount of Mora in return. Testing the aphrodisiac on a stranger was an appalling notion to Dottore. Having to deal with such an intimate situation disgusted him. Thus he opted to test his prototype on his familiar loyal assistant. At least, this would be easier to observe, he thought.
What he didn't expect was becoming aroused by the sight of your digits thrusting in and out of your wet hole, your essence leaking out, creating a mess across your thighs and the floor below you. He had tried to remain focused, writing wanton notes within his experimental log, but as his cock stiffened, creating a tent within his pants, his mind began to wander. He began to wonder how you tasted and how he would feel sheathed within your heat. Your shameless whimpers melted away what little restraint Dottore had left, and he wanted nothing more than to fulfil the cardinal desire that brewed within.
"Are you trying to seduce me y/n?" Dottore questions, your fingertips lingering over his scar as you admire his flushed face.
"Is it working?" you responded playfully, praying you weren't overstepping the blurred boundaries between the assistant and doctor.
"I think you've said enough," Dottore mumbles.
Before you have even a moment to process Dottore's response, he smashes his lips against your own, enveloping you in a heated kiss. You part your lips, inviting his tongue inside as your arms wrap around his neck. Dottore's kiss is desperate and heated. You deepen the kiss as the air is sucked out of your lungs. Dottore pulls back only to suck at your neck, biting down roughly, creating a series of blooming red marks. A high-pitched whine escapes your mouth as he repeatedly sucks and bites at a sensitive area of your neck, the area turning a deep shade of red, sending a shock wave of pain and pleasure through your body.
Dottore pulls away for a moment to briefly study your face. He analyses your reddened and swollen lips, dishevelled hair, the sheer layer of sweat covering your forehead, and your heaving chest as you breathe desperately. Then, wordlessly he hooks his arms underneath your legs, carrying you from the floor to his close-by bed.
Dottore makes quick work of your blouse, pulling it apart and throwing it across the room before unclipping your lacy bra with minimal struggle. You expect Dottore to stop there, but to your shock, he removes his coat and outerwear. You gasp as you bear witness to a Dottore adorned with complex harnesses shrouding his body. So the rumours that the eleven harbingers all wear harnesses beneath their clothing were true... the unconscious fantasies that you had dreamt of and fantasised about were not a fantasy but a reality.
With what little strength you had within your lustful body, you reached out to Dottore, your fingertips brushing over the exposed skin of his chest, which was tightly bound by the harness. You hear a low hum before Dottore forcefully pushes you back onto the bed, towering over your sensitive body. Hungrily his face finds refuge in your chest, roughly nipping at your sensitive nipples, which hardened as he smothered his hot tongue across, his fingertips rolling the other roughly, causing you to whimper at the sensation.
"It seems that your sensitivity has heightened to an impressive extent," he whispers against your skin, pressing his lips to the blooming hickey on your neck.
Dottore was far from wrong, your body was whithering with sensitivity, the raging aphrodisiac, your previous denied orgasm, and the ruthless abuse of Dottore's hot tongue and rough hands had taunted your body and mind to its limit.
"Please," you moan, intertwining your hands within his blue locks.
Dottore pulls back from your neck. A dull ache was left behind.
"Please, what?" he retorts, gazing at you with a pseudo-innocent smile.
"Fuck me,"
Dottore's gaze darkens, his arms caging you as you lie helplessly flustered below.
Not bothering to respond to your sheer desperation, Dottore pulls at his harnesses, skewing them aside and pulling down his trousers. He hisses as the cold air of the room hits his hardened length. He had a lean body despite his habit of remaining idly in his office. His cock was a girthy six inches, the tip a flushed red and wet with precum. You press your legs together in response feeling your body twitch in anticipation.
Nimbly, Dottore presses his hands against your knees, pushing them open, his heavy length prodding at your entrance. Your head rolls back as you anticipate his entrance and silently beg for your release. As Dottore begins to slowly push his cock through your entrance, your arms fail and your back arches, the sudden intense pressure sending your body into overdrive. Once he is fully sheathed within your tight walls, his hands press against yours, firmly planting them against your sides. For a moment, Dottore remains still, relishing the feeling of your tight walls squeezing around his cock.
"I'm going to move," he says, his crimson eyes washing over your exposed body.
Without a moment to process what Dottore said, his hips snap quickly, thrusting desperately, the tight walls of your heat sucking him in with each thrust. It wasn't long before the sound of skin slapping, and lewd moaning filled the room. Your hands intertwine with Dottore's, holding on for dear life as your breasts bounce with the force of his thrusts. Eventually, you hear a series of moans escape Dottore's mouth, his eyebrows furrowing and eyes half-lidded with lust as he gives in to his desires.
"Who would have thought you'd have such a lewd body, y/n?" Dottore taunts, removing a hand to press a finger to your swollen clit, and quickly rubbing circles over it.
"Ahh, Dottore," you wail, back arching as pleasure jolts through your body.
"Don't call me that," Dottore says between hushed groans.
"Zandik, my name is Zandik," he continues.
Before you can respond, Dottore's cock hits deeply against your most sensitive spot. Your walls clench, and your eyes roll back in response.
"Ah-hh Zandik," you moan loudly, fighting against the grip of his remaining hand against yours.
The sound of his name being lewdly moaned sent Dottore over the edge. His pace was relentless as he thrusts into your heat over and over, pressing against your sweet spot. Your arms, free from Dottore's restraint, flew around his neck, pulling him into a passionate kiss accompanied by a string of moans. The knot within your stomach had returned, the pressure building up as your climax grew closer. Dottore was close to climax as his relentless pace became sloppier, and his moans became reckless and distraught.
"Zandik, I want to cum, please," you plead, feeling your vision blur with overwhelming pleasure.
"Then cum," Dottore responds between shaken breaths, pressing a kiss below your ear.
You let out a deafening moan as the walls of your heat spasm, reaching your climax and falling apart as your vision turns white. Cum leaks out of your pussy, forming a white ring around Dottore's cock as he thrusts roughly a few more times before falling apart. Dottore pulls out, shooting his thick cum between your thighs. You lay breathlessly, utterly exhausted from your intense release.
Dottore admires your dishevelled body for a moment, the sticky mess between your thighs sending a shudder down his spine. He notes how long it took for you to finish mentally before throwing himself onto the bed beside you. You attempt to pick yourself up but inevitably fail out of exhaustion.
"The experiment was a success. You did well, y/n," were the last words you heard before falling into a deep slumber.
-
You awake the following day with a dull ache between your legs. Slowly you seat yourself up, immediately noticing that the mess between your legs is gone and you have been dressed in a strange nightgown. You begin to scan the room with sleepy eyes, noticing a red vial on the bedside table. Your heart drops for a moment.
"It's an anecdote. It will prevent any side effects of the aphrodisiac,"
Your head turns to find Dottore seated at the edge of the bed, dressed neatly in his usual wear despite his mask, which was missing.
"You don't have your mask on, Doctor?" you ask, consuming the vial's contents.
"I don't see the purpose of wearing such an inconvenience, considering you have seen my face already," he answers calmly.
A blush spreads across your cheeks as memories of the last night flood your mind. Dottore was a genius. The aphrodisiac had allowed you the experience the best sex you'd ever had. Not to mention that the experience allowed you to see his face and discover his real name. A sense of accomplishment swelled within your chest.
"I trust you won't tell anyone about this... experiment," Dottore continues before inching closer.
You shake your head and watch him bring a hand to your face, slowly swiping over your swollen lips and faintly smiling.
"I am not opposed to your companionship," he admits.
"You are a truly intriguing individual. Shall you accept me, I will allow you to accompany me on business trips of sorts. I will also protect you under the name of the Tsaritsa," he continues.
Your face heats up as you realise that this was Dottore's way of admitting his feelings towards you. An unconventional way of expressing adoration, but you, his loyal assistant, easily understood it.
"I would be honoured, Zandik," you answer, realising you had slipped his real name.
Dottore's face instantly flushed with a red hue as he refused to make eye contact with you. You tilt your head, attempting to make eye contact but failing.
"It would be in your best interests to refrain from calling me that," he mumbled, refusing to admit that the name reminded him of a y/n which was a dishevelled moaning mess, filled to the brim with his cock.
"I see," you smirked, watching him stand up from his place on the bed.
"You are free to spend the day resting until you can work comfortably. I have a meeting with the Tsaritsa today, so I'll be gone until dark," he states, picking his mask up from the bedside.
"I'll see you tonight, y/n," Dottore places a chaste kiss on your cheek before leaving.
After one interesting experiment, you were left with a heart swelling with adoration... who would have thought that the second harbinger of the Fatui would have it in him to have feelings for a mere mortal, nonetheless his loyal assistant...
-BONUS-
"y/n! I don't suppose you could assist me with something?"
"Lord Harbinger Pantalone, how may I help,"
It's not every day that a Fatui harbinger other than Dottore visits the laboratory. Pantalone stood idly above your bench, covered in vials of concoctions.
"Dottore had created me some sort of serum. It's under the number 747. If you could retrieve it for me, that would be incredibly helpful,"
You nod, heading to the storage area and retrieving the vial. For a moment, your eyes linger over the serum. It was a familiar blue colour and slightly warm to the touch. A shudder courses through your spine before you shake off the feeling and return to Pantalone.
"Ahh, that's the one," he beams, taking the vial from your hands.
"I'd assume that the trial of this serum was successful," Pantalone chuckles, swirling the vial within his fingertips.
You stare blankly at Pantalone before realising his eyes are focused on your exposed neck. You quickly realise that Pantalone was smirking at the series of dark hickeys left behind on your neck.
"Hmm, interesting. Dottore couldn't resist for once," he mumbles lowly before heading for the exit.