Truth be told, Roan did notice a specific pattern in the teleportation runes. The ones that had traps would usually have a set of extra connections on the edges, while the ones that led to safe rooms didn't. Of course, Roan wasn't certain of it, so he selected this room that was supposed to have a trap. He wanted to test it himself.
"I just didn't expect you would jump ahead and test the room for me," Roan spoke with a smile. "You sure know how to be useful."
Beelzebub used his energy to fight the effects of the room, returning to normal a few seconds later. "Useful, your ass! Why didn't you tell me beforehand?"
"You didn't even give me the chance," Roan shrugged. "You simply jumped ahead, assuming I was taking a path without traps."
Beelzebub's mouth twitched, but he tried to calm down. "Alright, so be it. So, what were the patterns you were talking about?"
