“The class of killers…”

A group of soldiers in camouflage stands in a forest, with a female soldier in the foreground holding a rifle, while the scene cuts to a close-up of a green-haired girl with wide eyes, then to a group of men in a traditional Japanese setting, followed by a close-up of a snake's head, then a couple embracing in a warm glow, and finally a dark, monstrous figure with glowing eyes against a night sky.