Sooo... Technically it's a part of a story I have in mind, but I think it goes well on it's own, too :P
Warnings: contains spoilers - somewhat - for and beyond (what it's called?) Tokyo arc (?) If you did not read the manga yet... And whether it's slash or not it's up to you.
DISCLAIMER: Don't own them and what not.
The vampire was fast to lunge at him and Kurogane stumbled back at the impact, trying to keep him from his neck. Normally he wouldn't made a fuss, but in the frenzy Fai was now he would drain him too much too fast. And they had guests, that had to be kept in the dark. The battle for control over the feeding ended with them downstairs on the couch; Fai sitting in his lap, going for his throat with a growl. Swiftly, Kurogane slit his wrist with a sharp object he managed to acquire during their scuffle and stuck it in the vampire's face. Fai paused, blinked and latched onto the blood, sucking hard. After a few of mouthfuls the mage lessened up and drank slower.
"Lie down," Kurogane grumbled. The wizard apparently decided to take his time, so the ninja had to think of something that would look as less suspicious as it can get. Especially if the mage decide to take a nap. Forcing his hand down, he guided the disgruntled vampire to lie over his legs. No, that wouldn't do as the warrior ended with the arm uncomfortably stretched to the right. With a sigh he pressed at the mage to scuttle back and ran soothing circles with his other hand on his back to quieten the displeased growls emanating from him. Finally content with their positions the ninja left the mage to his meal and looked at the mess they created. Somehow he doubted they will manage to clean it before the others returned.