Midden possesses Nina.

There is a belief among the demon clans.
Not a religion, per say, but it is something similar. A difference in opinion, one might call it. A belief as to why they are doing what they're doing.
Most of them believe that they are taking human bodies in order to conquer the surface world. To take it for their own. To topple the governments of men and rule like gods. That is the stated goal of their leader, King Calamity.
There are others who see the whole thing in a more spiritual sense. See it as a form of Evolution.
Demons are backward creatures. Basic things. Clumps of dark magic and sin. With no natural way to grow or change. They can't even procreate. A thing like that is not long for the world, in the grand scheme of things. Destined to die off in the deep dark.
But, when a Demon takes the body of a human, they become something else. Much more than they were before. Suddenly capable of walking in the sunshine, making love, doing all the wonderful things people can do. Things that devils can only dream of.
Some see this as the next step in their race's evolution. The so-called Great Traitor Royvis? She thought that.

Midden, however, isn't sure.
He's heard the arguments, sure, but he just doesn't know for sure. It sounds nice, though. Not having to fight. Not having to scrape his way up the ranks to sit at the King's side. But... No. He pushes the thought away.
He glances at the line of new sleepers making their way back the trail beside him. A path of green-eyed men and women who, smiles wide, take stock of their new normal. All of them half dressed, some even fully naked. The new men with their cocks fully erect. The new women with something wet running down their thighs.
Midden looks down at his own catch. This beautiful girl. She is limp in his hand, so small compared to him. Would he really be that small? The thought was strange.
Using a great amount of care, he reaches down and pulls at the bow that was keeping her bikini bottoms on. He pulls the garment right of her body. It's green. He tosses it aside, robbing her of her modesty. He would have inspected further, had the one behind him nudged him forward. Must focus. Can't hold up the line.

Finally, It was his turn.
An acolyte, one who has taken a body and stays beneath to serve, stands at the controls for the Claw. They gesture you toward the Bonds.
"Go ahead, Brother."
He nods.
Stepping forward, Midden begins. He straps her wrists into the metal manacles, giving them a quick yank to test their efficacy. Then he steps back, leaving the poor girl hanging from the ceiling by her wrists.
The acolyte does a short prayer to the King. The operators were devout, much more than Midden was.
Before they could begin, the Bonds begin to clatter. The girl was waking up!
"Wha- Where...?" She said, groggily.
The next Demon in line chuckles. "It woke up! That's good luck, brother!"
Nina starts to panic. She struggles in her bonds. "HEY! LET ME GO!"
The acolyte grins, pulling a lever. The Claw jerks forward, opening up wide, aimed right between her breasts.
"NO. NONONO!" She cries. "PLEASE!"
A series of runes, printed into the metal of the Claw, glow a sickly green. The metal thing pushes its way right into her chest. It makes no wound, draws no blood, it sinks deep into her body.
"AHHHHHH!!!" She screams in fruitless agony.
Her eyes go wide as the Claw retracts, pulling out. It seems to have more trouble getting out, Her back arching as the Claw exits her body. As it does, the girl goes limp once more.
In its jaws, the Claw holds a ball composed of pure blue light. It is the girls soul, holding everything that made her human. It bounces and jitters, attempting to escape the bonds that it has found itself in. The Claw swings wide, hovering over the Vat. It drops the soul in, Nina's joining the countless others that had come before.
"She is yours now, Brother." The Acolyte says.

Midden steps forward. This was the moment of truth.
"C'mon, Middy, show us how it's done!" The next in line says.
Midden places a hand on the girls head. He lifts it up to face him. With the other hand, he pulls her lips apart. Placing the tip of his claws into her mouth, he recites the spells under his breath. Then it begins.
His hands begin to melt away, turning into glittering mist. The mist is pulling into Nina's mouth. This transformation spreads to Midden's whole body. Soon he is but a cloud being pulled inside of her body.
As the last of him slips between her lips, her body begins to convulse.
A green light shines from behind her skin, illuminating her collarbone. Her eyes snap open, now a bright shade of green.
With her breath heavy, Midden's new body asks, "Acolyte, could you let me down please?"