Upon the suggestion of working together, Asters eye lit up. Traveling companions! People who could join him on adventures and help/save him in times of need! He was honestly worried since in reality the farthest he'd traveled alone was along the coast of Kalos before heading to Lumiose to head directly here! As of right now, he didn't know what to truly expect. The mention of legendary places he had only read about peeked his interest, would this mission really be leading them to the Sevii Islands? Or the Kantonian Victory Road? 

"... Wait a minute, there's a galarian Moltres?! Amazing! I wonder what it looks like." Aster said with a smile. "But yeah, I'd really like to team up with you since you seem like you know what you're doing. I hope we get along." He said holding his hand out.