Cain knew the exact location of the gang that worked for Clacius, but he did not directly go toward them.
He advanced deeper and deeper into the forest, reaching a place packed with Level 3 Wave Beast, and there was no small amount of Level 4.
If the gang were to die at the hands of a Wave Cultivator a few days before the Rouk City's Mayor, it could raise suspicion. However, no one would bother with a bunch of people who perished beneath the wrath of a Wave Beast.
Although Cain would have liked to use his hypnosis powers to command some of those beasts to do his work, things were more complex. The mind of Wave Beasts was more straightforward than that of humans and other advanced races, which is why they were more resilient to compulsion.
Still, Cain was a 2-Star Elementary Hypnosis Master, so he should be able to overcome the mind of a Level 4 Wave Beast if he gave his all.
