The killer of Akame

A tall, slender figure stands in a vast, reflective expanse under a blue sky with clouds, then the scene cuts to a white-haired anime character with a blurred face, followed by a dark-haired character in a red outfit, then a small red figure in a dark, glowing environment, then a low-angle shot of legs in motion, and finally a close-up of a dark-haired female character with blue eyes and an orange scarf.