Demon's salt

A young man with black hair and green eyes, wearing a dark uniform with a high collar, is shown in a series of dynamic poses against a city backdrop at sunset. He begins with a determined expression, then turns to face forward, raises his hands, and is seen from behind with a large, dark, wing-like energy formation behind him, before the scene cuts to a close-up of his face with a red eye and a black patch over his other eye.