I like how everyone has an excuse as to why they don't wanna group up, the martial artist elf and yandere duo is because of the healers selfishness (she admits it) and these two is because they don't wanna see their friends dead infront of them. Which is sad but it makes sense, you don't exactly wanna go to the military just to see the guy your friends for months now die infront of you during all the chaos now wouldn't it?