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 side view, full body in frame with margins. Mountain climber exercise: high plank on straight arms, hands on the floor under shoulders, body in a straight line, one knee driven forward toward the chest, the other leg extended back, intense focused eyes, dynamic pose. Bold line art, sharp dynamic cel shading, light speed lines, subtle red glow on the abs and driving thigh. Bright clean white modern gym background in anime style with soft blur. No text, no watermark.
