Responses
Yah, as I remember it, he mentioned that the girls' faces were simple and blurry, Yah?...but this story is from his point of view? So...isn't it him, then, that can't notice these girls' faces? Thus, he's the one who's missing that red flag. (In Creative Writing, we'd call his first person POV an "unreliable narrative"). Just a thought~
I love how we literally never see any of the girls faces