"Yes, I think that would probably be best. We don't want her to get invo-" And Key's words were suddenly cut off as she watched this girl go.... well would it be wrong to say Super Saiyan? Mentally, she was groaning. This girl was a first year student, and probably only 12 or 13 years old give or take a few years. Aurora was no match for anything that could be picked up by both Aram and herself. In fact, students shouldn't be getting involved with this at all. They were here to train, meaning that right now, they had no idea what they were doing.
Key stood for a few seconds, looking between where the girl had flown off to and Aram. It was common knowledge that Aram was a demon and the kind of energy or power or whatever it was the girl was giving off would probably... not be good for him. She sighed. That meant that Key would have to take care of Aurora herself.
As she walked towards the girl and the... fight? It didn't look like anyone was actually fighting, more like a battle of wits. Key pondered what exactly the best course of action was. Grabbing her and dragging her away was a good option, but those swords looked very pointy, and she didn't feel like starting her 6th life today. She considered leaving Aurora to finish whatever she'd started, but... that probably would end badly and then Key would be blamed. She'd worked hard to get this job, and she wanted to keep it.
So, the Phoenix went ahead with option C: hitting Aurora on the back of the head very hard with a book (as a librarian she of course had a steady supply) and hoping it would stop all the craziness with the swords and the glowing and were those souls?