Gorghino

Yes I have, but they all become hostile without any other option :/ Whatever, even if I found it as a plot forcing...

I'm doing "The Slaying Face's Hunt for the Titan's Heart" and I need to go to the Fleet Master's Office in The Brass Citadel. I already set fire to the powderhouse sneakily (Current main story quest: I have to go to Ukaizo ) and I can't enter into the Citadel without fighting. Two guards protect the west bridge entrance and they become hostile if I overtake them. At the beginning they're not and they warn me to wait outside until they find the responsible for the explosion. How can I manage it peacefully?