Create a square hyperrealistic portrait of a sumo fighting with a tiger in a museum. The image should capture the intricate details, showcasing the sumo’s unique features with a high level of realism. The color scheme should be rich and deep, with a balanced mix of shadows and highlights to give depth and dimension. The background should be understated yet elegant, with textures that complement the man without drawing attention away. The overall mood is one of sophistication and timelessness, reminiscent of a classical painting.