uekawa yuji, sonic the hedgehog, sega, sonic (series), sonic adventure, scan, animal ears, arm behind back, arm behind head, arms behind back, arms behind head, arms up, bent over, blue fur, dynamic pose, floating, flying, game console, gloves, green eyes, head tilt, hedgehog, jumping, red shoes, sega dreamcast, shoes, skateboard, skateboarding, sonic adventure pose, spiked hair, spikes, toon (style), transparent background, video game, white gloves