Professor Lisha probably wasn't human.
From the very beginning, Fu Qian had vaguely suspected as much.
It was mainly because of her reason for being here.
Cas wouldn't lie about something like this. There was no doubt that he wanted Fu Qian's opinion.
In that case, his decision to bring Lisha along was rather puzzling.
A small favor like taking Fu Qian to the lab could easily wait until after everything was over.
It couldn't possibly be that this academic expedition was short one attendant.
Then there was Professor Lisha's distinctly contradictory attire.
Leaving aside her air, Fu Qian had spent most of his time studying her neck during that careful inspection just now.
Against an obviously academic style, there was a shiny black metal collar around it. It really didn't fit.
And although it had been deliberately disguised, Fu Qian was quite certain it was a Supernatural Item.
A Supernatural Item important enough to wear despite ruining the whole look would have to be highly significant. It even brought to mind things like suppression or transformation.
Perhaps Professor Lisha needed it to maintain her current state.
Once he realized that, Fu Qian immediately played the expert, showing concern for the female mentor's academic insights. It was both a way to confirm his suspicions and to play along.
Judging by Cas's reaction, Fu Qian probably wasn't imagining things.
Professor Lisha seemed unusually sensitive to topics like certain species.
She was even still standing there stunned, as if she'd taken a tremendous blow.
Fu Qian's assessment was that she wasn't human, and that her self-image might be somewhat skewed.
Cas had probably brought her here to use the contrast between these supposedly "noble and elegant" creatures and their degradation into giant maggots as a lesson, helping her develop a proper outlook