I do not own Supernatural or The little mermaid but i do own the merblade and everything else

Crowley watched as the little mermaid Castiel followed Meg and Ruby to his lair. His plan was coming into motion perfectly. The little fish boy had no idea what was in store for him.

"Come on Clarence, this way," He heard Megs voice in the door way of his 'throne room' as he called it.

He watched as a shark mermaid with dark brown hair and purple tail with a shark fin came in followed by another shark mermaid with a dark red tail and black hair came in. What made him smile was the skinny merman with a blue tail, with dark hair came in next hesitantly.

"Come in child," Crowley said in the most friendly way he could, "Welcome to my palace."

Castiel looked around with large deep blue eyes filled with uneasiness. His gaze landed on the creature in front of him.

Crowley smiled as the small merman gulped. He knew he was a frightening sight. A deep black shark tail, sharp teeth and black eyes, He wasn't called the EVIL sea demon for nothing.

"Your, Crowley?" the merman asks in a deep gravelly voice that made Crowley tingle all over, masking his fear. He gazed Crowely head on and the demon was impressed.

"Indeed, L am Crowley," He confirms and slowly makes his way to Castiel, "I heard that you, love, want legs."

Castiel nods, "Yes I am willing to make a deal with you...please," he adds last minuet.

Crowley raises an eye brow, "Polite, even to a sea demon, Lovely. Well, angel, it seems that I'm your guy for a deal like that, I'm glad Meg and Ruby sent you to me."

Castiel's guard goes down for a second and he looks hopeful, "You can make me human?"

Crowley smiles and rubs his stubble covered jaw, "Well, for a price of course."

Castiel narrows his eyes, "You want my soul?"

Crowley debates that. If he gets the soul of King Chucks youngest son maybe he can bargain with the old man for a trade... or maybe he can get the special Grace mermaids had and take over the sea with it... either way he'd have control of all the oceans, and be off anyone hit list. He'd be able to defeat all his enemies with the boys Grace... maybe he can swindle both right from under the merman.

He smiles getting in negotiation mode, "Now dear Castiel. Becoming a human is a large feat. It takes more than just a soul, Love. In order to become human you need to no longer have Grace. Humans don't have it. So, I'll have to extract your Grace, but don't fret Love," He says as Castiel opens his mouth to object, "I'll take good care of it. It'll never leave my person. And you will get it right back. But the matter of payment... I guess I'll... take your voice. That lovely gravelly voice, of yours Love, is music to my ears. So, do we have a deal?"

Castiel's eye brows furred, "When will I get my grace back?"

Crowley smiled, the boy had taken the bait, "It'll go like this, I'll take your Grace and you will become human. I'll give you three days, Your doing this to see a lover, am I correct? If you can get the squirrel to fall in love with you and give you a true loves kiss before sunset on the third day, I'll let the whole deal go, You get your soul, Grace, voice, and stay human, the whole shebang. But, if you fail, you belong to me. I would love to have a little mermaid around the castle."

Castiel bites his lip thinking about it. If he didn't make Dean fall in love with him he is a prisoner of The Evil Sea Demon Crowley, but if he succeeds he gets to stay human, a part of the world he longed for so long to be apart of. But he'd never see his family again, "How am I supposed to get him to fall in love with me if I cant speak?"

"Ever heard of body language? Writing? Its not that hard love," Crowley replies.

Castiel thinks about it for a moment more.

"I don't have all day love," Crowley says after a few minuets of silence. Meg and Ruby watched idly off to the side.

Castiel takes a deep breath and holds his head high looking at Crowley, "Deal."

Crowley smiled a sharks smile, "Wonderful,"

He grabbed Castiels shoulders and kisses him to seal the deal.

As he pulled away he steals the mer-blade from the merman and cuts him on the neck slightly. he pulls a vial and a bright blue light seeps into the vial. As it happens, Castiels eyes widen and he opens his mouth in pain. Once he had all of the boys grace he swam back and watched as a bright light engulfed the young merman.

Crowley looks at Meg, "Take him to shore before he drowns, and keep an eye on him."

Meg nods and once the light faded a newly human Castiel floated there with wide eyes holding his breath. Meg swims to him and starts to pull him to the surface, "Come on Clarence."

Crowley watched as the two left with a smirk.

His time had finally come.

so this is my forst supernatural fanfic as of yet but dont worry i have DOZENS on the way. This is just one of many short one-shots that willl be associated with this au. I also have a wonderful Thumblina AU that is on the way and it is awesome if i do say so myself. so be on the lookout for those. hope you like this Little mermaid AU. it will get really cute. if you have any au ideas please message me. im open for all.

-Queen of Kings (smak101)