Chapter Warnings: Knifeplay and indirect consent

Author's notes:

This is a two part oneshot that will have a second chapter coming out soon. Follow me or the fic to get notified when I upload the second chapter!
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"Oh, oh I see now! Masochist, then!"

Dan licked his lips momentarily before running his grip down his mouth in an impulsive action. His spare hand looped into his belt, pushing back his jacket as he shifted his weight.

"Excuse me?" Dan squinted, raising an eyebrow.

Lucifer was elated with joy, eyebrows raised, lifting his hands from his pockets to spread his arms to his sides and emphasize his words.

"Well it makes perfect sense Danny boy." Lucifer leaned in to counter balance the shift of weight to his heels. "It's surprising it took me this long to realize, I can usually pick your type from a crowd."

His type? Dan had been standing there, fidgeting with his lips, glancing around to see if any of his colleagues had been listening. At the last sentence he had been in the middle of running his thumb nail across his dry lower lip before he instinctively grabbed Lucifer's wrist and forcibly led him.

"Nope. No more. That's it."

Smirking like a weasel as he was dragged into on of the quieter rooms of the station house, Lucifer chirped, "Oooh anxious are we? Well, if you insist." He chuckled through his words as detective Dan tossed him into the room and closed the door behind them. The only source of light was that of the spaces between the blinds which left white stripes across Lucifer's face perfectly as he stood opposite of the Detective.

"Just- just shut your mouth. For one-"

"Well I-"

"No!"

"Dan-"

"Abupbupbup! Shsssh! Shh! Shush." Each 'shush' had Dan doing a new hand motion to Lucifer's start of a sound. At the final 'shush', Dan pinched his fingers together as to force Lucifer's mouth shut with some sort of power.

It must have work as Lucifer stayed quiet, albeit, he still propped himself up against the available table with a not so amused look on his face. But, he was back to smirking in no time.

Dan leaned against a low filing cabinet opposite to Lucifer; the kind that he could half sit on but was too high to fully sit on while his feet still touched the ground. Dan pinched his nose as he thought before he brought his hand to his chest to emphasize his point. "I'm not a maso-whatever you called it." He waved his hand at him dismissively.

"Well, you certainly know the meaning for someone who pretends to not know how to pronounce it."

Dan's jaw muscle contracted, leaving the edge of his face much sharper than usual before it relaxed as he swallowed. He rubbed the sides of his mouth again.

"Look, you may speculate things but I don't need that kind of rumor on my back, right now, okay?" he said through gritted teeth before glancing back to the door.

In one fluid motion, the knife was out. Clicking out from the side of it's handle, the point pressed directly under Dan's chin while he instinctively tried to avoid it by unsuccessfully backing up. Dan simply found himself slightly higher up on the filing cabinet, back arched and one foot left on the ground while his digits dug into the metal corners to keep himself upright.

He only just realized the blinds were closed but Lucifer knew the second they had walked it.

Dan gasped an uneven breath, tightening his lower abdominal and floor muscles with a different instinct in mind. "Oooh." Lucifer chuckled. "How very interesting. Seems it's not just pain but the threat of it too. How.. exquisite." The last sentence was a lot softer than Dan was comfortable with and yet, he didn't object.

"Or maybe...it's just this?"

Lucifer trailed the point of the glinting blade down Dan's neck to the base of his collar bone, cold metal to skin and leaving goosebumps in its wake. As he glided it back up, Dan couldn't help but lift his chin higher and close his eyes. He felt an involuntary noise leave his mouth: a mix of shaky breath, a low whimper and his tightening throat. Shivering and gasping through gently parted lips, he swallowed and could feel his adam's apple raise to the blade before falling once more.

"Enjoying this, that much, are we? I've barely touched you." He tsked, "If, I mean, this even counts as that." His smile was wicked, a man with all the cards. Dan wanted to punch that cocky face and leave a nasty bruise on one of his stupidly sharp cheekbones.

Lucifer had slowly been moving closer, now close enough that his presence replaced the knife at his throat and Dan was stuck in his uncomfortable, arched position. With the new found mental restraints, Lucifer took the time to work the knife elsewhere, without worry that the detective would move.

He turned the edge and slowly made his way down the center of Dan's abdomen. The edge most definitely was not dull with the ease that Dan felt it's subtle scratch through his thick shirt. His body tensed and moved into the feeling as he held his breath. When Lucifer paused, Dan quickly exhaled, his muscles tensed rapidly with the stream of shaking, breathy sounds. This only made a low rumble of chuckles start in Lucifer's throat.

"Is this you're darkest desire, Daniel? Knifeplay?"

Dan swallowed to make way for words, however, all he could manage was a struggled, "guh..."

Lucifer gently led Dan's chin with his thumb and forefinger to look at him directly in the eye. "Oh, the things I could do to you."

Just then, the handle to the room clicked and Lucifer homed the knife as quickly as it had come. He returned to his spot at the table, however, Dan was left dazed while Chloe walked in.

"There you two are. Come on, we've got one on sixth." She had most definitely been talking to Lucifer. However, at her look to seeing Dan atop the filing cabinet, he felt the need to explain himself without giving himself enough time to swallow the dryness of his throat. In response, his body threw him, head first, into a coughing fit.

"Oh my goodness, Dan, are you alright?"

Dan had hunched over, finding solid ground again and waving to her that he was fine as he hacked his lungs out. The hunched position was also a convenient way of hiding his embarrassment; emotionally and physically.

"Yes, yes. He's quite alright. Can we go, please? Crimes to solve, murderers to punish. Remember?" Lucifer almost sounded like an impatient child, standing by the agape doorway. But, perhaps he was protecting Dan from having something discovered, however, he didn't know whether that came with a price or not.

Chloe was hesitant. "You sure you're okay?"

"Yep. Completely." Dan said with a tightened throat as he fought back another cough. With one final cough to the side, he stood up straight, albeit, facing away from Chloe, punching his chest once to get it all out. "Yeah... I'm fine." He cleared his throat. "Go on and make the world a better place. I'll be here."

Chloe looked him up and down before nodding and hurrying out the door with Lucifer in tow. However, before Dan was left entirely alone, Lucifer stopped, gripping the door frame, speaking in a voice that had a lower register than usual and made Dan feel a coil tighten in his gut.

"See you later."