While Noa was looking to abduct a demon, Ace was also thinking of different ways to enter the iron demon city if his mask didn't work or if it works, how can he take Noa inside with him?
Because he could see the security was no joke around the city gate and those demons were scanning everyone and everything with different powerful treasures and weren't sure if his mask could fool them or not.
Ace had to admit one thing: those demons really know how to be eye-catching. They had big carriages pulled by vicious and powerful demonic beasts. He could tell those beasts were all tamed, and it seemed the beast taming wasn't as novel as in lower lands, or it was something completely different.
He couldn't help but think of those beast eggs in his thief's space and techniques of Beast Calling Organization that he theft and all those storage rings of treasures mountain inside he got from Gordon's after fooling him.