Upon hearing Amon's words, Klein's heart sank.
Before this, he wasn't worried that Amon would collude with Genie, because "He" was a top-notch Swindler. No promises "He" made could be believed. As for Genie, "He" had encountered the former Lord of Mysteries. "He" was considered a victim of such matters in a similar vein. Therefore, "He" would definitely use "His" most wary of approaches to deal with Mr. Error.
This was the result of a lack of trust.
Sometimes, lying, cheating, and swindling could indeed increase the profits in the short-term, but in the long-term, it was better to be honest.
But now, the Trunsoest Brass Book had just formulated the rule of "deception is prohibited here."
And Amon didn't receive any punishment after making the promise!
At the same time, Klein and Genie didn't notice "Him" using any loopholes.
This proved how true and effective Amon's words were. It was from the bottom of "His" heart and wasn't a scam.