Delta told a stranger? Delta talked, voluntarily, about his hearing problems? Omega wonders what in the name of all that is good made that happen?

Wait, what was his name? "York? His name was York? Was he in full armor? Does he know where we live? Please tell me he didn't follow you in!"

If that man from before, that person who seemed to think Omega and his siblings were some sort of soldiers, who pretended to have a connection to Delta...

Another reason to take up mercenary work -to be able to protect his family. Omega's suddenly afraid he's going to be doing that in the very near future.