Dusk had long ago faded below the horizon, leaving the castle to soak in quiet shadow. Strong walls and wards had kept even the fiercest attackers at bay for half a millennium, so the patrolling guards were largely symbolic.
In a particularly deep shadow in a quiet corridor, the demon crept. Her footfalls were quiet against the stone floors, despite the lack of an audience. She could handle a guard but preferred to avoid the hassle. Her maid uniform would not save her from scrutiny - her long, spaded tail poked out from under the hem and her small horns would give her away instantly. Better to avoid notice entirely.
She paused at the top of a long spiral staircase and considered her target. Princess Amelia Catarina Rosalina of Villanova had a suite of rooms at the top of a tower. Irenna personally considered that to be entirely too stereotypical, but it did make it easier to keep her approach quiet.
Irenna eased the door open quietly and peered around the edge. Her gaze fell on the princess, who had fallen asleep reading. Her lamp had faded, only giving off the light it could generate from the ambient mana. The succubus's dark purple lips twisted in a wicked smile, and she crept into the room. She eased the door shut, careful not to catch her tail. She stalked towards her slumbering prey. As she walked, she slipped out of the maid's uniform she was wearing. Folding it neatly, she hid it under the princess's bed.
Now fully nude, she cast about for anything else that might get in the way of her full enjoyment of her target. She carefully pulled the book from the young woman's grasp. Princess Amelia stirred, and the demon dropped silently to the floor, just out of sight of her prey. She heard the princess shift and yawn, before settling back down. The demon let out a silent sigh of relief and tucked the book onto the nightstand where it would be out of the way. She deftly doused the lamp, then took a moment to decide just how to take her satisfaction on the defenceless princess.
With a wicked smile and a flick of her tail, Irenna pounced. She straddled the human woman, holding her arms securely over her head.
So easy. Irenna laughed at how easy it had been. Now, the second most powerful woman in the kingdom was at her mercy. It was just a pity that there was so much cloth between them. The succubus gyrated her hips a little, feeling the blankets and silk pyjamas that lay between her skin and the human's.
Irenna undid the top button of the silk pyjamas, kissing slowly up Amelia's neck. She was about to nibble the princess's ear but was interrupted by her sleepy voice.