Hey, it's those hunters in post #41589 as children.
When Mother Reimu turns toward her childrens' screams, there are young Reimu with the right side of her face gone and the sister Marisas screaming and crying and wetting themselves at the terrible occurrence.The parents are frozen at the sudden horrible turn of events. For that reason, they fail to realize the danger right before their eyes.
The perpetrators of the dreadful act, two human children, stand in front of them with smiles of amusement...AAAAAAAAH!