"Extreme close-up portrait of Zenitsu Agatsuma emerging from complete darkness. Only half of his face is illuminated by brilliant, cold electric-yellow light while the opposite side disappears into absolute black shadows. His eyes are closed in a deep, unconscious trance, radiating absolute focus, lethal speed, and unwavering determination during his Thunder Breathing state. His messy, block-cut blonde hair with orange tips is rendered with razor-sharp crystalline strands, catching the divine electric light with extraordinary detail. His face carries subtle battle scratches, dust, and sweat marks while maintaining an intensely calm, sharp, and terrifyingly serious expression. A restrained golden lightning aura and arcs of electricity gently wrap around his silhouette like flowing mist. Tiny glowing yellow sparks and electric particles drift slowly through the darkness while subtle thunderous heat distortion bends the surrounding air. Luxury matte black background, premium anime realism, painterly masterpiece, cinematic IMAX poster, Unreal Engine 5, Octane Render, HDR, ray-traced lighting, PBR, volumetric atmosphere, museum-quality detail, masterpiece, 8K, razor-sharp focus, no text, no logo, no watermark."