Work Text:
Since you’ve been working in the Task Force for a while you’ve also been included in the case to help find the mysterious person behind the infamous killer, Kira. However after L showed up to partake in the case you find that you’ve developed a ‘crush’ on the black-haired man.
Despite his weird habits and antics, you find yourself quite intrigued by him, not to mention he has a decent build for the amount of sugar he intakes within just a day. The way his collarbone shows from the top of his white t-shirt he always wears, and the oddly attractive dark circles around his eyes, you can’t help but be drawn in by him.
Recently Light, the boy who has been helping with the case, had been cuffed to L in order to prove that he was, in fact, not Kira. After seeing him in cuffs for so long you eventually began to set your thoughts on perverted things, such as “I wonder what he would look like cuffed to a bed” or “how would he look underneath me”.
Long after 13 days had passed, they were both un-cuffed and Light was proven innocent, at least to most of the Task Force. You could tell L still had a sneaking suspicion about him. The signs of his concern were so very little but you still picked up on it through his body language, eating habits and responses to certain things.
One day, once everyone had gone home (which was very rare since there was always at least three or four people in the workplace at all times), it was just you and L left in the workplace. You felt tired after a long day of searching for hints and clues as to who Kira may be, which failed miserably.
“Uhm, L I’ll be heading home now.”
You say to L who is sitting at a desk, eating a strawberry cheesecake as usual.
“Goodbye Miss (Y/N). Please do get enough rest.”
After getting approval to leave from your superior you begin to walk to the door, your heels clicking against the floor. Just before opening the door, you turn around and say,
“You don’t believe that Light is innocent do you, Ryuzaki?”
The man pauses for a second.
“What makes you think that, Miss (Y/N)?”
“Well... I suppose your verbal and body language slightly hint towards it...”
Soon after that sentence he swings around in his chair to finally face you.
“Ah, well I thought I was doing quite a good job of keeping my suspicions to myself. Yes, I am still wary of Light,” he stated. “Why don’t you take a seat, Miss?”
You looked down at the silver watch you wear on your wrist. After deciding you have enough time to sit down with him for a few minutes or so, you walk over and sit down in a chair beside him. You look at him and realise how he’s been inspecting you, letting his dark eyes wander all over you. You quickly flick your head to the side, letting your hair cover the sight of him.
“Do you always get this nervous around your co-workers, (Y/N),” he says “or do you only react this way when you find yourself staring at me?”
You look taken aback. Did he really just say that out of nowhere? Your cheeks begin to heat up at the embarrassing words he had just uttered.
“E-Excuse me?”
“My my, I’m sorry (Y/N). I didn’t expect you to get this flustered over that, however your not the only person who can pick up on body language...”
You’re at a loss for words. He’s humiliating you more and more with each sentence. You feel as if your heart is going to pound out of your chest.
“Say, I didn’t take you for someone to show interest in handcuf—“
“Stop!” you blurt out before he finishes that sentence. If he says anything else you don’t think you’ll ever be able to show up to work sane again. But why is he telling you this if he already knows your feelings towards him? Does he just want to see you suffer or is he maybe hinting to something that he wants?
Finally the silence is broken when he says “My apologies, I’ll talk to you tomorrow Miss (Y/N).” and with that, he turned to face his desk and went back to stuffing his face with strawberry cheesecake. You hesitated before saying your farewells and leaving the building.
————————————
the next day
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After the events of last night you found it hard to get any sleep. You slept through your alarm and showed up to work without any makeup, dark circles around your eyes. As soon as you enter your workplace, you see everyone’s attention directed at their work or computers, everyone but Ryuzaki. His eyes are glued directly to you.
“Good morning, Miss (Y/N). Did you not get enough rest? Your eyes almost look like mine.”
In response to this you touch your dark circles, feeling your heart flutter just a bit.
“I-I’m alright. Thank you for your concern.”
You can’t help but stutter and face away from him. In the corner of your eye you can see him smirk but as soon as you look up directly at him, he’s turned around in his chair again.
Throughout the day you tried as hard as you could to focus on your work, but after the teasing Ryuzaki had put you through you can’t take your mind off of him. After leaning against your desk for quite some time, Matsuda finally approaches you.
“Excuse me Miss (Y/N), but do you have the files L asked you to print out?” You gasped and finally realised how long you’d been staring at Ryuzaki.
“Oh! Ah, yes I have them in my office. I’ll go get them, sorry.”
Before Matsuda could finish saying ‘don’t worry about it’ you’ve already dashed out of the room.
“Shit, I am so out of it today...”
you whisper to yourself while searching through the drawers of your desk, trying to recall where you left the folders of paper. Soon enough you bend over to reach for the bottom drawers where you find the files but then hear a voice behind you say,
“Yes, you do seem to be out of it today, (Y/N).” You already know who it is and when you realise that you’re bent over right in front of him you shoot straight up and face your back to your desk. Ryuzaki then puts his hands on either side of you, staring directly into your eyes. You didn’t notice that he was this close to you. In a panic you grab the desk with both hands as he closes in on you.
Leaning in close to your ear, he whispers “I wonder what has you so distracted, hm?” before gently grabbing the files out of your hand and walking out of the room, leaving you alone with your thoughts. As soon as he leaves, you feel your face heat up and your heart race. Why did he say that? Does he know how much that can work a person up? Fuck, this man is driving you crazy.
———————
At 11pm
———————
Once again, everyone has left you and Ryuzaki alone. Is this the world trying to tell you something? You didn’t do too much during the day due to your lack of sleep and focus so after a couple caffeine breaks in attempt to stay awake, you don’t think you can rest for even a second.
Ah, there he is again. His messy black hair, his usual outfit and sharp collarbone, the spoon in his mouth again. Bet you wish you were that spoon—
“How long are you planning to stare at me,
(Y/N)?”
How the hell does he always know you’re staring at him? At this point, you began to care less about your actions. You’re cracked up on caffeine and have all this extra energy, so you’ve come up with a plan to dispel all of it.
“Ryuzaki, do you think you could take a bit of time off of work?” you smile politely. He tilts his head slightly before asking “Depends on if it’s worth my time.”
“Oh, I think it’s worth your time.” you fidget with your fingers a bit.
“May I ask why I need to take a break?” he inquires.
“I need help with something at my place” you say before grabbing his hand with both of yours.
“Nope. You need to tell me exactly what you need of me, (Y/N). I’ll decide whether it’s worth my time.”
Is he dumb? You’re trying to give him a good time and he just won’t budge. You’ve given up trying to lead him to your room and decide to spoil the surprise.
“I want to have sex, Ryuzaki.” you finally manage to huff out after thinking about what to say for a few seconds.
“Oh? Sex with who?”
Is he dense? You’ve lost your patience.
“You, Ryuzaki, god damn. I want to cuff you to my bed already and fuck you!” you slightly scream at him. After a few seconds of silence from him, the words that left your mouth had finally sank in. Your face heats up and you turn away from him, letting go of his hands.
“My my, then I suppose I could take a small break. Go on, lead the way Miss.” You were shocked at his words at first but then quickly took his hand and took him to your car.
————————————
At your house
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As soon as you open the door Ryuzaki closes it and pushes you against the wall, reaching for your neck and pulling you in for a kiss. Soon enough the kisses get rough and you feel yourself getting hotter. “Sleeping with your co-worker... how risky Miss (Y/N).” he says between kisses. Him referring to you as ‘Miss’ somehow turns you on even more. He begins to leave a trail of wet kisses down to your neck, trying to get even louder moans out of you. You start to breathe even more heavily than you already were as Ryuzaki starts unbuttoning your shirt.
“Wait, wait, wait,” you push him back “I told you I want to be on top of you!”
“Well, I can see you’re doing a great job at that,” he laughs sarcastically and smiles at you before going back to unbuttoning you shirt. You can tell he’s challenging you and in response, you take on his challenge.
You take his hands and push him away before dragging him to your room, roughly pushing him onto the bed. You unbutton the rest of your shirt and take off your skirt, leaving you in only your underwear and bra. It was a lacy, dark green matching set. Ryuzaki whistles at the sight, laying down on the bed with his arms behind his head. You turn around and reach into a drawer filled with other scandalous things before pulling out shiny silver handcuffs.
You reach down to take off Ryuzaki’s shirt, who is now sitting up and letting you take it off, revealing a surprisingly toned body. He then unbuttons his jeans and pulls the zip down before he’s stopped by you. You take both his arms in one hand and swiftly handcuff them together. “Haah, fuck.” he whispers under his breathe, looking to the side. Didn’t know he could get flustered. You can already see the imprint of his dick on his black boxers peaking above his unzipped jeans.
You slide your hand down his body, eventually reaching his dick and pressing against it lightly, earning a soft moan from him. “I didn’t take you as someone to be into handcuffs, Ryuzaki.” You’re teasing him. He knows this yet it still gets to him. Maybe now he realises how worked up it got you. “I need you already (Y/N).” he’s breathing heavily.
“Why don’t you beg a little, Ryu?” his face gets a little red. Did he like that nickname? He sighs before looking directly at you, half-lidded eyes, and saying, “Please, touch me princess. I need you so bad, please.”
And that was enough to send you over the edge. Without hesitation you pulled his black boxers down, revealing his cock standing almost fully erect. Fuck, it‘s big. Really big. You stare at it for a few seconds before relaxing your eyes and looking him in the eyes, circling the tip with your tongue. He’s already moaning quietly and moving his hips, aching for more of your mouth. You then close your eyes and stuff almost all of this cock down your throat. He lets out a loud moan and you can hear him swearing under his breathe.
You start moving your mouth up and down, your tongue dragging along his shaft. “Fuck princess.. your mouth feels... s-so good..” he breathes out and swings his head back on the bed, moaning loudly. His moans get you even more heated and you start moving your head even faster on his cock, eager to hear his begging and pleas.
“Ah, fuck, please feels so good.. I love you so much— fuck aah,” he’s getting lost in his thoughts as you take his length deep into your throat. “Gonna c-cum soon princess... fuck..” you drag your tongue sensually up and down his shaft when all of a sudden he starts thrusting his hips forward into your mouth in rhythm with you. You feel tears forming in your eyes and struggle not to choke on his cock.
“I’m gonna come down that p-pretty throat of yours, princess..” and after a few more moans and thrusts, he does just that. Soon he stops thrusting and you pull off of his cock.
Straddling his hips and hovering just above his cock, you stick two fingers inside your pussy and start slowly pumping in and out. “Fuck princess you’re so wet already. You might just be able to slide it in..”
You let out a soft moan and in response Ryu looks to the side, swearing under his breathe.
You decide that you can’t hold back for any longer and move the tip of his length to the entrance of your pussy. Slowly moving it back and forth, you start moving down on him, moaning softly. You manage to stick the tip in all the way and pause for a second before panting heavily and moaning, stressing over how the fuck his cock will even fit inside you.
Suddenly all your thoughts are washed away when he tilts his head back, saying “Haa... fuck I can’t take this.” and suddenly, breaking the chains on the hand cuffs, pushes you over to get on top of you, suddenly thrusting his whole cock inside your pussy. “AHh— fuck!” you moan loudly. Looking down you can see he’s actually pushed his entire dick inside you, but before you can think about anything else he starts thrusting inside you over and over again in a rhythmic pace.
“Ah— FUCK fuck you’re, ah! You’re so fucking big, shit.”
“Keep moaning like that princess.”
And you moaned as loud as you could without holding anything back. You couldn’t think of anything besides how hard he was fucking you, in and out and in and out.
“I love it when you moan like that, when you take my cock and moan that loud for me. Why don’t you say my name, princess?”
Between shattered moans he could hear you say his name over and over again. “F-Fuck AHh Ryu, please fuck me, Ryu!” After hearing his name being moaned out so loudly, he himself began to moan after every thrust, fucking you even more aggressively now. “Gonna— fuck, I’m gonna cum Ryu,” you moan out, moving your hips against him. Just before you can release, he stops moving completely. “Ryu, what the fuck—“
“Tell me what you want princess and then I’ll give it to you.”
You immediately feel your whole body heat up. He’s really not going to let you come unless you beg him to.
“...Please let me cum..” you say softly.
“Hm? Did you say something princess?”
“Fuck, Ryu, please fuck me until I cum!”
And with that, he started fucking you again, ravaging your insides. “Cumming, I’m gonna cum—“ and this time, he let you unfold. You become a drooling mess on his cock when you both release together.
He pulled out of you and laid down beside you. “Fuck... that felt good (Y/N).”
You’re both breathing heavily after the intense feeling. And here you thought you were going to fuck him until he was a mess.
You turn to look at him. He’s still staring at the ceiling, mouth slightly open. His side profile is quite beautiful seeing it up close. “Don’t stare at me like that, princess. I’ll want to take you again and I have to go back to work.”
You shudder a little and turn to stare at the ceiling.
“You can use my shower—“
Before you can show him to the bathroom, he’s already gotten up and zipped his jeans up. “I’ll be fine. If anything, you should wash up more than me since I came inside you.” he says, his eyes half-lidded.
You open your mouth to say something but then decide to leave it, your face heating up. Honestly, how can he say such embarrassing things with a straight face? “Please, take care of yourself (Y/N).” he says as he slips his shirt back on.
“Oh, right I will—“
You pause as he walks over and kisses you on the lips. Without another word he leaves the room, yet again leaving you alone with your thoughts (and this time a couple hickeys on your neck). You sit up feeling flushed. Before you get lost in thought, you get up to go take a shower.