Believer

A white-haired character with a scarred face and a headband marked with "XIII" wields a long, dark weapon, moving it in a sweeping arc while displaying a manic grin. The scene cuts to a second character in a white shirt and black pants, who is mid-leap, before returning to the first character, now with glowing red eyes and a wide, unsettling smile, as a purple blade passes in front of their face.