Royal AU
Theseus Scamander could not do much as a prince to further his plans. He could do, and had done quite a bit, of planning and research. He’d found a summoning spell for a demon a few years ago. Not only a demon but a prince of hell, himself.
The demon, Grindelwald, would give him the power for his dreams to become reality. His dreams of making his beloved baby brother into his queen.
Grindelwald hadn’t even wanted anything in exchange, just a possible favor far off in the future when Theseus was king. Theseus had happily agreed.
When he’d summoned the white haired demon, Grindelwald had given him just a taste of what the future would be like.
“Did you know, my prince, that one of my gifts is to see the future? Before you agree or disagree, perhaps you’d like to see a glimpse?”
With a wave of his hand, everything around them changed like a gust of smoke into the ether.
Theseus saw a mirror image of himself sitting on his father’s throne. But Theseus (and Grindelwald) had eyes only for Newt. Sitting in the throne next to Theseus was Newt.
The younger man wore a long blue dress, a sheer gossamer layer around his pales shoulders and made the skirt of the dress sparkle. Upon Newt’s head, wrapping around the red curls was a golden throne. It wasn’t their mothers- instead it looked more like someone had taken vines and leaves and dipped them in gold to make a crown for his brother.
He looked beautiful. Newt turned towards the other Theseus, giving a soft smile to the other. The other Theseus took Newt’s hand in his, bringing it to his lips to kiss. Which earned a small giggle from Newt that made Theseus’s head spin.
The next image he saw was in their bedroom. They saw through the red silken curtains around the bed of Newt sliding himself down on the other Theseus’ hardened member. The light sounds Newt made as he did so, the way he threw his head back- his red curls sticking to his neck from sweat.
The other Theseus had his hands on Newt’s hips, murmuring encouragements for his queen. Seeing Newt like this, his kind baby brother doing such sinful acts- the sounds he made, that they made as they made love were leaving Theseus fairly uncomfortable.
“I-I can’t Thee’,” the younger whimpered, his movement becoming erratic when the other Theseus met Newt’s movement with rolls of his hips.
“Go on, my precious little one,” the other Theseus grunted, seemingly forcing himself to refrain from switching their positions and pounding into Newt.
The image of Newt coming, completely untouched, the beauty of it remained in Theseus’ head for a very long time.
When their mother tried to present possible courters for either of them or when their father reminded Theseus he was only a prince, Theseus would think of Newt. He thought of bringing the other as his queen, his wife forevermore with no one to stop him.
Theseus thought of Newt, his future queen and he would overcome whatever trials awaited them.
(He didn’t know the demon he summoned had plans of his own)