Cora couldn't take it anymore. Derek had told her to stay out of their fight with the nogitsune but she couldn't stand by while her friends fought for their lives. So when Derek left in a hurry, which definitely meant something was happening, Cora followed him. When she got to the school, she waited a moment to watch what was happening. Seeing a perfect copy of Stiles saying things that would never pass Stiles' lips made a shiver run down her spine.
But once the fighting started, she focused her attention on Derek. She was antsy, shifting from foot to foot as she waited for the right time to jump in. Derek hit the ground and Cora could feel herself shift as she jumped out, launching herself at the Oni. She ducked its sword, turning around and clawing at it. She wanted to look back at Derek but she had to stay focused. The Oni was more difficult to fight than she thought.