Mer au idea
Nightwing is captured by some sea fae, could be a mermaid or a water nymph, and is held in place by their giant octopus hench creature. They are enamoured by his good looks and witty charm and they want him as theirs. It doesn't matter that Nightwing is so obviously human, they must have them.
They try brokering a fae deal, "I can make your wildest dreams come true", but the vigilante is adamantly refusing, "I'd rather not sleep with the fishes, thank you," he knows not to do such a thing. Constantine has drilled it into the JL's heads to never ever ever make deals with those from underhill.
It takes one slip, a spasm in his face when he hears Red Hood arguing and cussing out at Batman and it is all it takes for the sea fae to sense a weakness, an opening. A sly grin, a gentle clawed hand tilting Nightwing's face slightly, eyes sharp and glinting.
"Don't you want those two to get along?"
"Of course I do," Nightwing agrees without delay, but it was a mistake. It's too late to take those words back and he pales underneath his mask.
They respond with a large smile with too much sharp teeth, the hand on his chin tightening to a painful degree. "Your wish is my honour to grant, Nightwing."
And they kiss him, a surge of ice rushes into him, coating his tongue and slipping down his throat, rushing into his lungs and choking him. It spreads further inwards, passing through his lungs and into his heart, filling every crevice and nook, settling heavily under his sternum and tingling all the way to his fingertips and down his spine.
"I will make it so, and in return, you will come to me, to be mine," they whispered, eyes bright like sparkling emeralds, their long serpent tail coiled tightly around him, cold fish scales scraping against his suit.
"I won't," Nightwing croaks, shaking his head.
"You will. The call of the deal will grow as time marches forward," they state, lips now brushing his ear, "I am patient. I am powerful. You will come to me."
Nightwing shivers in their grasp, the ice in his veins unpleasant. He feels his stomach drop. He can't, he can't, he can't.
He could hear them yelling at one another, attacking the other fishy hench creatures around. There was a loud explosion and several pops of a gun.
"We're having sushi tonight!"
"I prefer calamari, thank you."
"Shut up, RR!"
"My family-"
"Can do nothing to help you," they purred, nails digging in. "You may say your farewells, spend whatever time you can stand away from me with them. It will do nothing to stop the inevitable. You cannot escape."
He tries to argue again but the fae has had enough, their strong tail wrapped tightly around him, the tentacles of the giant octopus gone. All the cold, too cold, air escapes him, leaving him mute.
"I and the sea will call you and you will answer us. Your body will change, slowly, I give you this," they rumble, voice unhurried and uncaring of the growing chaos around them. "You get to properly say goodbye to your family and then..."
They kiss his throat, his cheek and then his forehead, as if he were something precious, something to be treasured. It leaves his stomach roiling.
"Nightwing! Get your hands off him, vile fiend!"
Robin-!
The fae laughs, long tail uncoiling, claws dragging across his suit. They hold him high up and Nightwing could do nothing but shiver in their grasp.
"You may have him, little child. Me and mine will take our leave."
He is thrown to the side and within moments, the fae and their underwater creatures were gone.
"Nightwing, are you alright?"
He shook. He was the farthest thing from alright.
