Childhood friend?

"I'm going to check on the group who just got out."

Before Lux could leave, Stephanie stopped him. "Wait a second! We need to go too, this is a strange situation that needs to be inspected, I can't let something like this happen to more people."

From Stephanie's words, Lux understood that the creatures living in that Portal also killed two members of that group before retreating.

It's not like they suddenly considered humans their allies, most likely low threats compared to the Forgotten Beast they were forced to kill.

"Alright, then come with me."

***

Fifteen minutes or twenty minutes later, Lux and the others saw the remainder of the group; there were around forty people who were still breathing, but most of them were covered with injuries.