I had this idea that only the main character and their companions can see monsters in game, because they exist outside of the realm that most people are cognizant of.
Then I wanted to do something where, because people can’t see the monsters, they sometimes get in the way trying to talk to you or yell at you while you are fighting them.
I had this vision of this complaining old lady just STANDING in front of this beast, yelling at you, refusing to move because she’s yelling at you, and the monster’s ready to kill her, and you’re ready to kill her because she refuses to get the heck out of your way.
So sometimes, to get the monster, you have to hit the civilian and hurt them because they are in the way, refuse to move, and the monster is getting ready to attack and ruin all the things.
Seems like a decent one, if my experience with MI is any good reference.