Despite the man talking, Derek didn't stop his relentless assault. At the same time, the demons also stopped attacking and backed off.
As if they were waiting for the result of the fight between Derek and the man.
The man took out a dark book, it had a red eye on its dark cover. Once he opened the book shot out a beam at Derek, and as soon as the beam landed he froze in place.
Instead of taking advantage of Derek's immobility. The man created some distance between them. "I know you're faking being frozen in place by the Forbidden tome."
Derek moved again, once it was clear that the Demonic Beastmaster wasn't fooled.
Anika couldn't help but feel that the name "Forbidden Tome" felt familiar. Did someone famous use it? Also for the object to cause a stun on someone with seemingly no limits, it must be a very strong Magic Item.