Derek tensed when he arrived at his loft and could smell Stiles there. He cautiously opened the door to see Stiles casually sitting on his couch. "Hey! Look who's not at the police station being questions for murder." He said cheerfully, looking at Derek with a smirk.

One look at his aura, which the fox wasn't even trying to hide, showed he wasn't Stiles.

Derek growled, and in a few quick motions, pulled the nogitsune up by a hand around his throat, claws out, but not adding enough pressure to do damage.

"Do it then. Kill us." The nogitsune taunted, smirk still in place. "I bet you won't. After all, kill me and you kill Stiles. No one seems to want to do that."

Scowling, Derek let his hand fall from Stiles neck. "Good doggy." The nogitsune said, reaching up and patting Derek's patting Derek head, causing the scowl to deepen.

"How did you get out of Deaton's office?"

"We got board. We did find some neat stuff in there though." He said, pulling a few bottles of God knows what out of Stiles' pocket.

Derek reached forward to pull them away, but instead of releasing the vials, the notgitsune moved with the motion when Derek tried to pull them towards himself, resulting in Stiles' body being pressed against Derek's.

The nogitsune smirked as it looked up at Derek through Stiles' lashes. "You know, it's a shame really. He's in love with you, but he never got to tell you before he became we." The nogitsune said with mock sympathy, wrapping Stiles' arms around Derek's shoulders.

"Get off of me." Derek growled, glaring at the fox.

"Do you actually want that?" The fox spirit practically purred. "We head you had a thing for hooking up with the bad guys. Two of them already."

"Shut up."

"What's that thing we're always saying? One's an incident. Two's a coincidence. And three's a pattern." A sly smile formed on Stiles' face. "What do you say, Derek? Wanna make a pattern with us?"

Before Derek could even say anything, soft lips were moving against his own. And then Stiles' tongue was poking at his lips, trying to get into his mouth and all thoughts of who he was actually kissing went out of his mind. As far as his body was concerned it was Stiles.

Derek pushed Stiles up against the wall, letting his tongue explore Stiles' mouth while Stiles' hands tangled in his hair.

It was when he pulled back for air and looked into Stiles' whisky colored eyes that who this really was came crashing down on him.

"Let me see Stiles. Please. Even for just a minute." Derek pleaded.

"Sorry, Sourwolf," and it was so weird hearing someone other than Stiles call him that, even if it was someone using Stiles' voice. "but it's either us or nothing."

"Then I guess it's nothing. I'm calling Scott to take you back to Deaton." Derek said, letting go of the nogitsune, and taking a step back.

"Your loss." The fox said with a shrug. "I'm not going back to Deaton's though." With that he opened one of the vials and threw it in Derek's direction.

Derek fell to the ground coughing when the powdered wolfsbane hit his face, and he could do nothing but watch as the nogitsune skipped out of his loft.