DBZ Master-Student Sparring (Roshi-Goku / Piccolo-Gohan)

Re-render this image as a frame from Dragon Ball Z (Toei Animation, 1989-1996) Akira Toriyama character design, depicting master-student sparring. Mid-shot composition with two figures: an elder/mentor and a younger student, both mid-action in a martial exchange. Elder can be visibly older (gray hair, beard, weathered facial features) but body still posed in confident stance, mid-block or mid-counterattack with one fist raised or palm open in deflection. Student visibly younger, posed in mid-strike or mid-recovery from a strike, expression intense in concentration. Both bodies show committed muscular tension, neither holding back. Both wear training-gi (orange, blue, weighted-armor variants) with visible wear and dust. Background: training-ground setting (cliff-top, desert plateau, island clearing, mountain training-platform), distant horizon visible, Oga-watercolor-influenced background with cracked-ground or vegetation at edges. Lighting: outdoor directional sun from upper-screen-right, hard shadows on both figures, slight dust kicked up between them catching the light. Cel-animation linework: heavy confident Toriyama-school ink for both figures, heavy shadow-fill on muscle areas, motion-lines from arms or feet to indicate kinetic energy of the exchange. Color palette: warm body-tones, dusty-orange gi for one, blue-or-purple gi for other, earth-tones for ground, soft blue sky. Mood: the elder who can still hit the younger, the mentor whose teaching is bodily and unscalable, the transmission that does not happen through speech, the spar that IS the lesson. No legible text, no studio watermark. Aspect ratio 16:9 matching source. Preserve the subject and composition of the source image exactly, change only the medium and rendering.