As a defense against demons, the Reader comes up with an Enochian spell. Cas suggests testing it on him. It works, but you also find another steamier use.

Pairing: Castiel x Reader (Y/N)

Warnings/Promises: SMUT, bondage (sorta?)

Word Count: 1430

Note: This took me three tries to write because I wanted it just perfect. Let me know if you think I reached that point or even close! My tag lists and requests are open. I’ve also started to reblog fics that I’ve enjoyed. [See my #ReadItForward and #WritersReadingWriters tags] I may be opening a massive can of worms, but if read something wonderful, reblog it and tag me ‘cause I’d like to check it out too! As for this fic, I hope you guys like it. Enjoy!

If you hadn’t thought Sam had the library bugged, you would have thrown the book across the room. You’d been staring at it so long the letters were starting to blur together.

“Y/N?” Cas was suddenly sitting across from you.

“Cas! Can you please not do that?” You took a deep breath to cool off your adrenaline. “I thought you were on the case with the boys?”

He nodded. “Yes. But they are finishing up and will head out in the morning.” He leaned forward and looked over the book. “Light reading?” His head tilted in confusion when you sighed. “What’s wrong?”

“I-“

Were you really going to tell him? Yes. Yes, you were.

“I’m trying to come up with a spell that will pin something to… somewhere. Like the demons do to us. We can’t put demon traps everywhere, and they aren’t any good against a spontaneous attack. I don’t trust Latin or Arimathean, or even Sanskrit, so I’m trying to better my Enochian.”

He nodded sagely. “That sounds like a good idea. But I take it from your earlier prayer of frustration that it is not going well.”

You looked off into the room with a blush. “Sorry. I didn’t mean to call you. The… lack of progress got to me I guess.”

“I am always attuned to your emotions.” He cleared his throat. “And Dean’s and Sam’s too, of course.”

“Of course.” The dry pages rustled as you rubbed them between your fingers in the silence.

“Would… would you like some… help?” He drummed on the table while you hummed in confusion. “For making an Enochian spell, the key thing is getting the rhythm right and purpose right. What you’ve got written down is too much. All that text ensures success, but with enough effort behind it, you only need a few words. You’re half a step away. Would you like… my… help to make the spell?”

You bit your lips. “I would appreciate that.”

Cas flicked around to sit beside you. He guided you through the book and helped you whittle down your work. Several hours later he had shed his coat and had rolled up his sleeves. He stood on the far side of the library, waiting to try out the spell. You read the few words, holding one hand towards him though your sight was focused on the scrap paper. Then you heard a soft ‘oompf.’ Cas was against the far wall a few feet off the ground and smiling.

“See? It works.” He landed on his feet as you lowered your hand. “Now read it like you mean it.” He stopped your worries with a calm hand. “You won’t hurt me.” He stepped closer and nodded for you to try again.

This time you brought up the memory of your last run-in with a demon. The adrenaline, the helplessness, the rage of the hunt was enough to send Cas flying backward. He twisted around a bookcase and slid across the floor until his back was against a wall.

“Cas!” You dropped your hand and rushed over to him. “Are okay?” You tried to help him away from the wall, but he flinched as you touched his back. “Sorry. Let me take a look at the damage?” You eased him out of his shirt, flinching yourself when you saw the bruises. “Oh, Cas-“

“I’m fine… see?”

You looked down again and watched the bruises fade away from under your fingertips. Relieved, you pulled your hands away, but Cas took them in his.

“Don’t stop. Please.” His thumb rubbed over your knuckles. You never noticed how warms his hands were before. “I think the same about yours.” He let you go. “Sorry. Didn’t mean to read your mind.”

“Right now, I don’t mind. What am I thinking right now?” Hoping it wasn’t too forward, you pictured his hands spread across your bare shoulders. Yours scratching down his back. Twirling fingers in each other’s hair.

Cas closed his eyes to watch and hummed. “If I would like to share that with you… can I earn it with another test?”

“You’ve already earned it.” With a hesitant breath, you leaned down and lightly brushed your lips against his. His fingers weaved into your air and your felt the room spin. When it had settled, another brush of air alerted you to your lack of clothes. Cas broke away from the kiss and gasped to see you.

His hands reached up to cup your breasts. He thumbed over your nipples, making you gasp. You arched into his touch as he tugged your peak between his teeth. His nails trailed up your thighs, leaving light lines in their wake. You bucked and pleaded for him not to tease. Cas simply chuckled. But he answered your cry with easing a digit into your heat and moaning at the wetness he found. His slow strokes and curls pulled whimpers from your lips but left your release simmering just out of reach. You dug your nails into his back. Cas growled.

“You feel so good, Y/N. Clamping down already. I’ve wanted this… I’ve wanted you for a long time. I will give you everything if you can only be a little patient.”

He was shocked when you flipped him to his back.

“I’ve been waiting too. I will not be patient.” You fought to stay on top as Cas tried to flip again. He was playing with you, making it seem like you had control when he could use his powers at any second. You could handle that. Using the same mental images you’d shown him, and the rising arousal inside you, you flattened your hands on his chest and spoke in Enochian.

Cas’s hands were caught on either side of his head and his body was taunt beneath you. He laughed, his chest rumbling under your touch. “Y/N, I am a celestial being. Sooner or later, I will… reciprocate.”

“I look forward to it.”

You began to slide back and forth across his torso. His length was trapped between his stomach and your slick. You shivered each time the head bumped into your clit. You read somewhere that there are over eight thousand nerve endings in a clit; with Cas trapped under you and his cock still driving you wild, it felt like double that. You shifted your weight and kept one hand on his chest so you could guide his cock into your heat. Your eyes closed in bliss as you sank. Cas moaned with you, quaking when you came to rest on his thighs.

“Y/N-“ He gasped and strained against the spell. It wavered as your walls fluttered. “You feel so perfect, Y/N.” He grunted, and his hips trembled under you.

You raised up and sank back down slow. Your head lolled to your shoulder, and your mouth fell open as you continued. Your nails dug into his chest as you picked up speed. Each time your blood crackled with desire, the air seemed to shimmer. You kept your eyes on Cas. He was panting hard and curling and uncurling his fists. His eyes were half-lidded and his skin had a thin sheen of sweat.

“Cas-“ you sighed.

Cas opened his eyes. They were bright, glowing just beneath the surface. You wanted to see more of that, so you slammed down on his cock as fast as you could.

It was right there. You cried out as Enochian letters glowed under your hand then fractured out. You came when they glowed the brightest before the fade. Cas could move again, and he grabbed your hips first. Your toes were still curling from the first orgasm as he thrust through it. It was hard to breathe, but Cas got you there. He let out a shuddered and jumbled flow of words then pinned your hips to his. Your body gave a jolt with each shot of cum to your walls.

He helped you off his hips to lay next to one another. You draped your arm over his chest, breathing to the rise and fall of his chest. You hummed into his skin and let your eyes close in the afterglow.

“Are you tired?” Cas asked.

“Not completely. Why?”

He rocked his head. “The brothers don’t get back until morning.” He watched you intently and you felt a cool wave of grace flow over your body, searching out the places where you were most sensitive. “I have a spell of my own, or two, that I would like to test. May I?”

You hummed. “You may.”

Masterlist 

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