ultrarealistic, 8K UHD, a 21 yo male model like Jason Lewis, under shower, skinny muscled, flexing, full-body, ultrawide torso, thin waste, abs, V-shaped body, aesthetic physique, proportional skinny muscle definition, manly, slim body, barefoot, short boxer brief, (sculpted:1.7) (toned:1.3) (lean:1.3) (slender:1.3), NSFW,