At his point, Klein had roughly understood the situation.
Due to the law of Beyonder characteristic convergence, he had been targeted by the Spirit World Plunderer the moment he entered Calderón City, which didn't even have ordinary dead spirits. It first moved the golden disc of unknown origins to the predicted path, allowing his marionette to see it while walking past. As such, his attention was transferred to the transformation effect Calderón City had on the living. Following that, it used the giant blacksmith, which wasn't its soul avatar, to distract him further. Finally, it secretly arrived within control distance and achieved success in "one try."