Gear Second Luffy anime battle poster with Haki coating

Masterpiece, ultra-detailed anime illustration of Monkey D. Luffy in Gear Second/Gear Fourth style, intense battle stance, glowing crimson red eyes, messy black hair, iconic straw hat on his back, torn open red shirt, heavily defined muscular physique, glossy black Haki coating with intricate swirling patterns covering enlarged arms and fists, thick white steam and smoke rising around the body, dramatic low-key cinematic lighting, high contrast shadows, gritty dark grunge background with black ink splashes and textured concrete, giant stretched condensed white typography in the background displaying "GEAR SECOND", "BOUNDMAN", or "SNAKEMAN", centered editorial poster composition, hyper-realistic anime rendering, ultra-sharp details, volumetric smoke, dynamic perspective, powerful expression, premium wallpaper design, monochrome black, grey and white palette with red eye highlights, Unreal Engine quality, Octane Render, 8K, vertical 9:16.