honestly I would be fine for the girl being a little bit of a dick if the guy stuck up for himself at all. It doesnt seem like that collar stops him from doing anything harmful to her, so why doesnt he just message his demon friends the issue? sure shes strong, but the person he works under is probably stronger than her, and since no one in hell cares about the angel invasion according to him, they probably wouldnt mind making a home visit to rescue his dumb ass. Is he just a complete idiot? If he is, why did they send him on this mission? I am perfectly fine with this scenario, it seems like the girl has reasons for doing what she is doing, and the guy has a reason to be there, and a reason to meet her, im just not fine with how the guy does absolutely nothing about his situation after being collared.