"Derek! No."

Stiles is now pulling on Derek's arm to get him to back off. And the Nogitsune, it just tilts its head to the left, inspecting them both.

"I am Stiles' future," it says frankly, looking confident and implacable. "And you, Derek...you are not. He will be mine, and I will destroy his life, his friends, his family. I will eat both your souls, and laugh as you die in agony and chaos. You're both going to be so delicious..."