((Heh, I saw that edit, MJ.))
"I'm not too certain, but judging from the information and memories I acquired earlier, it seems to be a sound-based disease generated by an at least partially sentient weapon. It seemed to kill many daemons. I don't know how it works, exactly, but I would hypothesize it's bonding to the metal in me, specifically in my blood, to resonate throughout my body. Its intent seems to be to kill daemons, but judging from the behavior of the beings we encountered, I'd guess it killed the host with daemonic augments and drove the daemons insane as they possessed the husk. The frequency I used on us should have slowed down the disease, but I'd need time to develop an actual cure if I can't find someone else with the relevant knowledge."
"And if I may, sir, let me apologize. They always taught us that daemons were mindless creatures, like animals, aside from the very large ones that showed sentience. The memories have proven this wrong. I am truly sorry for binding you and taking you away from your life. If we survive whatever catastrophe is sure to occur with my luck, I'll spread this knowledge to others so that hopefully such infringements on the freedom of a sentient species may stop, and I'll try to help you in any way I can, to make your stay here more comfortable if I cannot find a way to safely send you back. Perhaps there might even be a way for our species to work together, to the benefit of both, if your species ever forgives us. But if I do die at some point in the near future, I want you to know that I am sincerely sorry."
"How rude of me to forget introductions, though. My name is Daemian McWehrnecigul."
Talky stuff, hopefully without CHA roll. Offer a handshake after the introduction if the daemon accepts.