Create a dark vertical anime street-art poster featuring {argument name="character name" default="Gojo-like white-haired sorcerer"} standing centered in the lower half, facing forward with a cold intense expression. He has messy {argument name="hair color" default="white-silver"} hair falling over his forehead, pale skin, one visible glowing icy-blue eye peering from shadow, and a high-collared black tactical coat or cloak with angular straps and glossy wet highlights. Behind him, fill the entire background with a huge ominous shadow face or demonic mask silhouette, only two narrow glowing cyan-white eyes visible near the upper middle, looming over him. Use a gritty urban grunge wall texture with cracked concrete, heavy black ink, distressed paint, red and teal/cyan glitch blocks, horizontal digital smear artifacts, scratches, splatters, drips, and torn poster-like layers. Add a single vertical white graffiti/calligraphy sigil at the top center above the character, abstract and illegible, like Japanese brush strokes. Composition should be symmetrical and cinematic, portrait orientation 2:3, high contrast, mostly black and charcoal with strong blood-red and turquoise accents, dramatic top/back lighting on the hair, deep shadows on the face and coat, cyberpunk glitch horror mood, painterly anime illustration mixed with street graffiti and digital distortion. No readable typography except the abstract sigil, no watermark, no extra characters.