But the state of the Undead was quite special; one couldn't feel any hint of breath or Magic Power from him.
He even looked like he had been in the Principal's Office for a long time, not perturbed by their arrival, just like a withered old tree, and it was unclear what he was waiting for.
Then there was only one answer left. This Undead was peculiar, and even the other members of the Demon Race in the school might not be able to see him.
Often, only souls that were extremely powerful in life or creatures that had undergone aberrations, harboring too intense obsessions, would turn into Undead.
The Principal's Office shouldn't naturally have Undead sneaking in unless the school's Barrier did not repel him. Could it be that he was actually a formidable member of the Demon Race in life?
While she was thinking,
[Did you see me, little cat who sneaked in?]
A strange and ancient voice wafted to her ears.
She was slightly surprised.