Miko was calling the bluff of someone she was sure at the very least was some kind of spy or assassin. But... a life completely without danger wasn't...
Miko was calling his bluff, or at least she was doing so now. That was a rather convenient turn of events, as Hiruko had a special response for those...
The idea of a little roughness didn't hit Miko's ear in a bad way. Hiruko couldn't call himself surprised after what he saw the girl doing to herself...