The reason why Bryan had been able to track down the two Asakans and save them at that right time was because of the many detectors placed all over the town. Magic detector, teleporter detector, and demon detector.
On arrival of the two both the magic and the teleporter detector had been triggered, Bryan could have sent out some of his boys to check it out but he decided to check it out on his own because he believed that whatever that came through a magic teleporter could be dangerous and was just going to monitor it for now.
He didn't expect the people that came through the teleporter to be a middle-aged man and a teenage girl who looked harmless.
After Leo had narrated how they arrived here he suggested that Tania be put in the academy while the middle-aged man stayed with him in order to help him figure out a way back for them.
"So what are you saying?" Bryan asked. "Not like you have much of a choice anyway."
"What do you mean?" Tania asked.
