Authentic Japanese shonen sports-anime illustration, the exact same character as in the reference sheet (short spiky dark-brown hair, shirtless, black shorts without waistband, bright blue sneakers). Strict FRONT view, full body in frame with margins above and below. Jumping jack in the air: arms raised wide overhead, legs spread apart in a star shape, both feet just off the floor, cheerful confident expression, dynamic action pose. Bold line art, sharp dynamic cel shading, light speed lines, subtle red glow on shoulders and thighs. Bright clean white modern gym background in anime style with soft blur. No text, no watermark.
