The photoshoot concept for a Shotaro Otomo-inspired fashion gallery could be centered around a retro-futuristic theme. Models could be styled in clothing and accessories that evoke the futuristic, high-tech feel of Otomo's art. The use of metallic fabrics, neon colors, and bold, geometric patterns could create a striking and cohesive look. The photoshoot could be set in a futuristic, industrial location, with sleek lines, neon lights, and a sense of urban grittiness.