Trust was not an issue, because Nero never trusted anyone he didn't know closely. He always had his guard up. Meanwhile, Vilhelm appeared relaxed and nonchalant, but he didn't need to read facial expressions and body language to know someone's intentions. He could literally see them as clear as day.
Moreover, there was literally nothing more suspicious than a man telling someone to trust only him. As much as Nero found Garry's unusual personality to be enlightening and amusing, it was not nearly enough to afford him the full extent of Nero's trust. Now that he was meant to be bait…
Nero showed nothing externally, but internally he increased his vigilance by a great degree. Even though he would get extra security, who could say whether or not the danger would come from the security itself?
