File:HTFE48 oyasawa kao.jpg

oyasawa kao is a caring, green wolf who can flip out into a war-like persona because of his PTSD. Whenever kao hears or sees anything that reminds him of warfare or combat, such as the sounds of popcorn popping, or an alarm bell ringing, he flips out and switches over to his war-like personality, who then kills everyone in the area. However, he switches back into kao, he usually has no memory of what happened, but can be able to see that damage and can regret what he has done.