Generate a full-body, high-detail image of an anthropomorphic Nano Banana hero in a vibrant, dynamic shonen anime art style. The hero, sleek and stylized with bright yellow skin and heroic proportions, stands in a powerful, action-ready pose, wielding a futuristic energy katana with a sharp, glowing blade. A brilliant, golden shonen energy aura crackles intensely around its form, radiating power and casting dramatic light. The background features a stunning cosmic panorama with swirling nebulae, distant galaxies, and streaks of warp-speed starlight, creating an epic, celestial battle scene. Emphasize a determined expression, dynamic camera angle, and intense, dramatic lighting that highlights all glowing elements.