The first cub

Three shirtless male anime characters stand side-by-side in a triptych, their expressions shifting from serious to determined as the camera zooms in on the central character with green hair, who then appears in a dynamic, blurred motion. The scene cuts to a female character with spiky blonde hair in a revealing outfit, followed by a chaotic group of students in school uniforms, some with exaggerated expressions, before ending on a bright, overexposed flash.