Raon had sent them a message using a personalized talisman that he got from a senior at the Arcane Academy. It was still in the testing phase and would only launch on the market after getting rid of any failures.
Of course, Raon got close to that Senior Brother for getting a half-complete talisman, as he already knew the future and got it for testing. Then, he completed it to the refined stage that he remembered, making up for the errors it had in its current form.
'I hope it worked and they are actually coming right now...' Raon hoped for the best as he realized that the Diplodor left the Core Region since it didn't show up despite five presences nearby.
'Maybe it can detect me too?' thought Raon skeptically. He couldn't be sure after all.