Black Clover

A dark, oval-shaped portal appears in a blue, ethereal environment with floating red particles, which then emits tendrils of dark energy. A young man with black hair and red eyes, wearing a dark outfit, screams in agony as he is pulled into the portal, his body contorting as he is consumed by darkness. The scene cuts to him emerging from the portal, now transformed with a demonic appearance, including horns, a muscular, scarred body, and glowing red eyes, standing defiantly against a backdrop of fire and dark, wing-like shapes.