One for all

A group of anime characters in matching uniforms stand together, then the scene cuts to a close-up of a determined young man with green hair, followed by a shot of him crouching with a confident expression, then a brief, blurry image of a character with spiky blonde hair, then a close-up of a young man with red hair and a young woman with black hair looking at each other, and finally a close-up of the green-haired character with a serious expression. The setting appears to be a school or training facility.