Sunset beach

An anime character with brown hair and blue eyes covers his mouth with his hand, then the scene cuts to a split screen showing two different anime characters, one with a neutral expression and the other with a wide, toothy grin, before transitioning to a circular frame showing a smiling character with dark hair, followed by a close-up of a futuristic weapon with glowing blue lights, and finally a character in a blue and white armored suit with a helmet, holding the weapon against a starry purple background.